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The aim of this work is to evaluate the effect of adding different amounts of SiO2 nanoparticles (NPs) during the synthesis of polylactic acid (PLA) and polypropylene (PP) blends on the proccesability. The analysis was carried out in terms of the morphological, rheological and mechanical properties as well as their potential applications for packaging. To reach this goal, it was initially realized an optimization of sol-gel parameters to produce of SiO2 NPs with a particle size < 20 nm. Thereafter, different quantities of SiO2 NPs (1, 2, 3, 5 wt.%) were incorporated into PLA matrix through melt mixing process to achieve pellets and finally, it was realized the polymer blend to produce PP100-x(PLA-SiO2)x nanocomposites (x = 5, 10 and 20 wt.%, of PLA-SiO2 pellets). It was found that the addition of SiO2 into PLA matrix improves the crystallinity percentage, from 10 to 77%, depending on the SiO2 quantity; however, it also restricts the movement of PLA chains favoring a viscous behavior. A high dispersion of PLA-SiO2 systems into PP matrix was obtained in composites containing 1 wt.% of SiO2. The presence of inorganic nanostructures modified the dipole-dipole interaction between organic components affecting the microstructure and thermal stability (lower Td). The observed interaction and high dispersion with low amounts of SiO2 NPs (1 wt.%), led to improve the interfacial miscibility, which in turn enhanced the mechanical properties in the PP90(PLA-SiO2)10 nanocomposites, compared to PP and PLA. The results indicate that at the end of product shelf-life, this composition can promote a faster degradation in contrast with pure PP and PP-PLA composites.
D. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; J.S. Ponce-Hernández; S.B. Brachetti-Sibaja; A.E. Rodríguez-Salazar; V. Urdapilleta-Inchaurregui. An assembly strategy of polylactic acid (PLA)-SiO2 nanocomposites embedded in polypropylene (PP) matrix. Journal of Materials Research and Technology 2021, 14, 2150 -2164.
AMA StyleD. Palma-Ramírez, A.M. Torres-Huerta, M.A. Domínguez-Crespo, J.S. Ponce-Hernández, S.B. Brachetti-Sibaja, A.E. Rodríguez-Salazar, V. Urdapilleta-Inchaurregui. An assembly strategy of polylactic acid (PLA)-SiO2 nanocomposites embedded in polypropylene (PP) matrix. Journal of Materials Research and Technology. 2021; 14 ():2150-2164.
Chicago/Turabian StyleD. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; J.S. Ponce-Hernández; S.B. Brachetti-Sibaja; A.E. Rodríguez-Salazar; V. Urdapilleta-Inchaurregui. 2021. "An assembly strategy of polylactic acid (PLA)-SiO2 nanocomposites embedded in polypropylene (PP) matrix." Journal of Materials Research and Technology 14, no. : 2150-2164.
Academy–industry collaborations (AICs) play a crucial role in the creation of new knowledge, by transferring this knowledge to the society and bringing into line theory and practice. Although in the state-of-the-art exists a number of efforts to analyze different factors that influence these collaborations, little attention has been paid in the application of dynamic capabilities (DCs) as an emerging tool to identify strategic elements in public research institutes (PRIs). Aiming to fill this literature gap, in this study, DCs methodology was applied to the Mexican PRI in order to classify the research activities into these strategies. A second stage was carried out to determine the influence of each DC in the global productivity and knowledge integration or transfer. The relationship between the variables was statistically analyzed using one-way analysis of variance (ANOVA) and Pearson’s correlation coefficient. The main findings of this study showed that sensing and reconfiguration capabilities have a direct interaction on the global productivity and knowledge integration or transfer of the Mexican PRI, whereas the seizing capabilities present a weak impact on these items. The proper application of the DCs framework, as a substantial instrument for the PRI, opens up an alternative to identify that the main activities should receive special attention during the strategic planning process. These strategies can improve academy–industry collaborations by promoting the process of global knowledge and technology development.
A. Rodríguez Salazar; M. Domínguez-Crespo; A. Torres-Huerta; A. Licona-Aguilar; A. Nivón-Pellón; V. Orta-Guzmán. Analysis of the Dynamical Capabilities into the Public Research Institutes to Their Strategic Decision-Making. Sustainability 2021, 13, 6672 .
AMA StyleA. Rodríguez Salazar, M. Domínguez-Crespo, A. Torres-Huerta, A. Licona-Aguilar, A. Nivón-Pellón, V. Orta-Guzmán. Analysis of the Dynamical Capabilities into the Public Research Institutes to Their Strategic Decision-Making. Sustainability. 2021; 13 (12):6672.
Chicago/Turabian StyleA. Rodríguez Salazar; M. Domínguez-Crespo; A. Torres-Huerta; A. Licona-Aguilar; A. Nivón-Pellón; V. Orta-Guzmán. 2021. "Analysis of the Dynamical Capabilities into the Public Research Institutes to Their Strategic Decision-Making." Sustainability 13, no. 12: 6672.
The main purpose of this work was to synthesize ZnO nanoparticles (NPs) in situ into a chitosan (CS) matrix to obtain highly dispersed antibacterial composites by the sol–gel technique. These composites were characterized by their thermal, structural, morphological and optical properties. NPs were subsequently used and added into polyvinyl alcohol (PVA) in order to obtain electrospun fibers. Previously, it was determined the adequate PVA/CS ratio and changes in their morphological features in dependence of molecular weight of PVA and electrospinning parameters to avoid the beads and spindle-like defects in the final fibers. Then, optimal conditions were used to fabricate PVA/in situ ZnO:CS nanofiber composites. The hydrogen bonding interaction governs the ZnO:CS system, which forms a combination between flower-type and agglomerated rod morphologies. It was found that CS promotes the crystallinity of ZnO NPs maintaining the hexagonal phase. The addition of ZnO into the CS matrix was performed via weak interactions by stabilizing the hybrid compound after the second decomposition stage when the mass loss is above 50%. Free-defects uniform fibers with an improvement in hardness as well as in the elastic modulus was obtained in the electrospun PVA/in situ ZnO:CS fibers. The presence of ZnO NPs improves the spinnability in the fiber nanocomposites with an average diameter of 223 nm. PVA/in situ ZnO:CS mats displayed an inhibition of bacterial growth of Escherichia coli and Staphylococcus aureus.
K. Santiago-Castillo; D. Del Angel-López; A.M. Torres-Huerta; M.A. Domínguez-Crespo; D. Palma-Ramírez; H. Willcock; S.B. Brachetti-Sibaja. Effect on the processability, structure and mechanical properties of highly dispersed in situ ZnO:CS nanoparticles into PVA electrospun fibers. Journal of Materials Research and Technology 2021, 11, 929 -945.
AMA StyleK. Santiago-Castillo, D. Del Angel-López, A.M. Torres-Huerta, M.A. Domínguez-Crespo, D. Palma-Ramírez, H. Willcock, S.B. Brachetti-Sibaja. Effect on the processability, structure and mechanical properties of highly dispersed in situ ZnO:CS nanoparticles into PVA electrospun fibers. Journal of Materials Research and Technology. 2021; 11 ():929-945.
Chicago/Turabian StyleK. Santiago-Castillo; D. Del Angel-López; A.M. Torres-Huerta; M.A. Domínguez-Crespo; D. Palma-Ramírez; H. Willcock; S.B. Brachetti-Sibaja. 2021. "Effect on the processability, structure and mechanical properties of highly dispersed in situ ZnO:CS nanoparticles into PVA electrospun fibers." Journal of Materials Research and Technology 11, no. : 929-945.
Traditionally, biochar is generally proposed to substitute Canadian Sphagnum peat moss. Sugarcane bagasse, filter press mud and sugarcane bagasse ash were mixed in different ratios and proposed as an alternative to substitute commercial Sphagnum peat moss (SPM) for the soilless cultivation of tomato (S. lycopersicum Linnaeus). The choice of the agroindustrial waste ratio was performed from physical-chemical sample characterization. During vegetable production, an adequate ratio was evaluated based on plant height, substrate pH, number of leaves, yield, and fruit size. The addition of essential macro- and micro-nutrients was performed manually. The results show that as-received materials contain different minerals with a structure that corresponds to the quartz, cristobalite, and feldspar phases. A morphology composed of lamellate structures was observed for sugarcane bagasse, whereas the filter press mud and the sugarcane bagasse ash presented compact agglomerates with a surface area of 1.60, 3.78, and 1.07 m2 g−1, respectively. The properties of each component promote the water adsorption, retention and releasing capacity. Important differences were observed as the quantity of filter press mud increased, but also it is required an amount of sugarcane bagasse above of 18 wt% to reach a superior performance. This work demonstrated that, in adequate quantities, agroindustrial wastes can be used as a soilless substrate for growing tomatoes in greenhouse, reducing their disposal problems.
Vanessa Natalie Orta-Guzmán; Jorge Aurelio Lois-Correa; Miguel Antonio Domínguez-Crespo; Joel Pineda-Pineda; Aidé Minerva Torres-Huerta; Adela Eugenia Rodríguez-Salazar; Ángeles Iveth Licona-Aguilar. Evaluation of Sugarcane Agroindustrial Wastes as Substrate in Soilless Cultivation of Tomato (S. lycopersicum Linnaeus): Effect of Substrate Composition on Yield Production. Agronomy 2021, 11, 206 .
AMA StyleVanessa Natalie Orta-Guzmán, Jorge Aurelio Lois-Correa, Miguel Antonio Domínguez-Crespo, Joel Pineda-Pineda, Aidé Minerva Torres-Huerta, Adela Eugenia Rodríguez-Salazar, Ángeles Iveth Licona-Aguilar. Evaluation of Sugarcane Agroindustrial Wastes as Substrate in Soilless Cultivation of Tomato (S. lycopersicum Linnaeus): Effect of Substrate Composition on Yield Production. Agronomy. 2021; 11 (2):206.
Chicago/Turabian StyleVanessa Natalie Orta-Guzmán; Jorge Aurelio Lois-Correa; Miguel Antonio Domínguez-Crespo; Joel Pineda-Pineda; Aidé Minerva Torres-Huerta; Adela Eugenia Rodríguez-Salazar; Ángeles Iveth Licona-Aguilar. 2021. "Evaluation of Sugarcane Agroindustrial Wastes as Substrate in Soilless Cultivation of Tomato (S. lycopersicum Linnaeus): Effect of Substrate Composition on Yield Production." Agronomy 11, no. 2: 206.
In this work, the optimal conditions of synthesizing and purifying carbon nanotubes (CNTs) from ferrocene were selected at the first stage, where decomposition time, argon fluxes, precursor amounts, decomposition temperature (at 1023 K and 1123 K), and purification process (HNO3 + H2SO4 or HCl + H2O2), were modulated through chemical vapor deposition (CVD) and compared to commercial CNTs. The processing temperature at 1123 K and the treatment with HCl + H2O2 were key parameters influencing the purity, crystallinity, stability, and optical/electrical properties of bamboo-like morphology CNTs. Selected multiwalled CNTs (MWCNTs), from 1 to 20 wt%, were electropolymerized through in-situ polarization with conductive polymers (CPs), poly(aniline) (PANI) and poly(pyrrole) (PPy), for obtaining composites. In terms of structural stability and electrical properties, MWCNTs obtained by CVD were found to be better than commercial ones for producing CPs composites. The CNTs addition in both polymeric matrixes was of 6.5 wt%. In both systems, crystallinity degree, related to the alignment of PC chains on MWCNTs surface, was improved. Electrical conductivity, in terms of the carrier density and mobility, was adequately enhanced with CVD CNTs, which were even better than the evaluated commercial CNTs. The findings of this study demonstrate that synergistic effects among the hydrogen bonds, stability, and conductivity are better in PANI/MWCNTs than in PPy/MWCNTs composites, which open a promissory route to prepare materials for different technological applications.
Silvia Brachetti-Sibaja; Diana Palma-Ramírez; Aidé Torres-Huerta; Miguel Domínguez-Crespo; Héctor Dorantes-Rosales; Adela Rodríguez-Salazar; Esther Ramírez-Meneses. CVD Conditions for MWCNTs Production and Their Effects on the Optical and Electrical Properties of PPy/MWCNTs, PANI/MWCNTs Nanocomposites by In Situ Electropolymerization. Polymers 2021, 13, 351 .
AMA StyleSilvia Brachetti-Sibaja, Diana Palma-Ramírez, Aidé Torres-Huerta, Miguel Domínguez-Crespo, Héctor Dorantes-Rosales, Adela Rodríguez-Salazar, Esther Ramírez-Meneses. CVD Conditions for MWCNTs Production and Their Effects on the Optical and Electrical Properties of PPy/MWCNTs, PANI/MWCNTs Nanocomposites by In Situ Electropolymerization. Polymers. 2021; 13 (3):351.
Chicago/Turabian StyleSilvia Brachetti-Sibaja; Diana Palma-Ramírez; Aidé Torres-Huerta; Miguel Domínguez-Crespo; Héctor Dorantes-Rosales; Adela Rodríguez-Salazar; Esther Ramírez-Meneses. 2021. "CVD Conditions for MWCNTs Production and Their Effects on the Optical and Electrical Properties of PPy/MWCNTs, PANI/MWCNTs Nanocomposites by In Situ Electropolymerization." Polymers 13, no. 3: 351.
Electrospinning technique was used to obtain a new class of biopolymer/inorganic nanoparticle hybrid fibers fabricated by using poly(lactic acid) (PLA) as the biopolymer matrix and lanthanum phosphate nanoparticles (LaPO4) as energy down-converting materials. Before being incorporated and electrospun with the PLA, the LaPO4 nanostructures obtained from microwave-assisted hydrothermal method were studied to have a depth understanding related to their synthesis parameters, since it is known they adopt different structures and morphologies with the temperature and pH. Highly hydrophobic samples of LaPO4 nanoparticles in hexagonal and monoclinic phases with mixed morphologies (rods and semi-spherical) were detected in samples calcined at 400 °C while those calcined at 600 °C consisted mainly in monoclinic phase with semi-spherical morphologies. Smallest particles in semi-spherical and orthorhombic morphologies obtained at pH 1 and 11 were detected after processing them through electrospinning technique and distributed uniformly into the PLA. The vibrational analysis suggested that the ester group (RCOOR') in PLA plays a key role in the interaction with the LaPO4 nanoparticles. These materials can find practical applications in biomedical areas for replacing conventional polymers.
D. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; S.B. Brachetti-Sibaja; H. Dorantes-Rosales; A.I. Flores-Vela. Energy down-converting LaPO4 nanoparticles highly dispersed into poly(lactic acid) electrospun fibers: microstructural and optical properties. Ceramics International 2020, 46, 25273 -25284.
AMA StyleD. Palma-Ramírez, A.M. Torres-Huerta, M.A. Domínguez-Crespo, S.B. Brachetti-Sibaja, H. Dorantes-Rosales, A.I. Flores-Vela. Energy down-converting LaPO4 nanoparticles highly dispersed into poly(lactic acid) electrospun fibers: microstructural and optical properties. Ceramics International. 2020; 46 (16):25273-25284.
Chicago/Turabian StyleD. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; S.B. Brachetti-Sibaja; H. Dorantes-Rosales; A.I. Flores-Vela. 2020. "Energy down-converting LaPO4 nanoparticles highly dispersed into poly(lactic acid) electrospun fibers: microstructural and optical properties." Ceramics International 46, no. 16: 25273-25284.
In this work, agro-industrial wastes such as sugarcane bagasse and orange peel were used for obtaining activated carbons through phosphoric acid activation in order to propose them as adsorbent materials during the production of carbon foam or filters for wastewater treatment applications. A two-step process was carry out to obtain activated carbons; the first step consisted of a simple physical activation at high temperature 400 °C to reach raw material decomposition; followed by acid activation at temperature of 500 °C. The effect of concentration of acid media (45, 65 and 85 wt.%) was analyzed in terms of the thermal stability, sorption, textural and structural properties. Surface area increases with the concentration of activation media, which is ranging from 114.08-355.52 m² g-1, 49.54-228.90 m² g-1 for sugarcane bagasse and orange peel, respectively. Fourier transform-infrared spectra showed the presence of functional C-O-P group, which confirmed with the thermal stability of the samples. The produced carbon foams showed a two-level cell structure with bubble and bar-like structures that increase the pore quantity in the carbon foams.
Ángeles Iveth Licona-Aguilar; Jorge Aurelio Lois-Correa; Aidé Torres; Miguel Antonio Domínguez-Crespo; Héctor Javier Dorantes-Rosales; David S. Garcia-Zaleta. Sugarcane Bagasse-, Orange Peel-Derived Adsorbent Materials: Thermal and Morphological Studies. Journal of Nanoscience and Nanotechnology 2020, 20, 4563 -4573.
AMA StyleÁngeles Iveth Licona-Aguilar, Jorge Aurelio Lois-Correa, Aidé Torres, Miguel Antonio Domínguez-Crespo, Héctor Javier Dorantes-Rosales, David S. Garcia-Zaleta. Sugarcane Bagasse-, Orange Peel-Derived Adsorbent Materials: Thermal and Morphological Studies. Journal of Nanoscience and Nanotechnology. 2020; 20 (7):4563-4573.
Chicago/Turabian StyleÁngeles Iveth Licona-Aguilar; Jorge Aurelio Lois-Correa; Aidé Torres; Miguel Antonio Domínguez-Crespo; Héctor Javier Dorantes-Rosales; David S. Garcia-Zaleta. 2020. "Sugarcane Bagasse-, Orange Peel-Derived Adsorbent Materials: Thermal and Morphological Studies." Journal of Nanoscience and Nanotechnology 20, no. 7: 4563-4573.
Natural clays, engineered Ag-nanoparticles (NP), TiO2-NP, and exhausted coffee grounds were used to synthesize a nanocomposite 7NC using a Vertisol soil through a single-step by thermal method, to build a nanomaterial to degrade or filtrate pollutants from soils, water or air. The surface characteristics and the porosity of the composite were studied through nitrogen gas adsorption at liquid nitrogen temperature and application of the Brunauer–Emmett–Teller (BET) equation and the results indicated that the microporous composites ranged a surface area of 17.36 m2 g-1. X-ray diffraction showed crystalline structure and crystalline phase of the nanocomposites. HR-TEM-STEM results demonstrated that TiO2-NP surrounded Ag-NP, and both were impregnated on natural soil nanoparticles. Oxidation states of the Ag-NP and TiO2-NP were analyzed by X-ray photoelectron spectroscopy (XPS) The energy gap of nanocomposite 7NC was determined using the Kubelka-Munck model from Ultraviolet–visible diffuse reflectance (UV–Visible DRS) spectra. The photocatalytic activity of these nanocomposites was evaluated, and the results indicated that nanocomposite with Vertisol-soil-NP (7NC) degraded the harmful organic compound methylene blue (MB) while the antimicrobial activity and resistance against Escherichia coli and Staphylococcus aureus and the zone of inhibition (ZOI) also were analyzed. The nanocomposites Ag-NP/TiO2-NP/natural-soil-NP/exhausted coffee-ground showed its for the development of an efficient material for environmental remediation with photocatalytic and antimicrobial activity.
Vianey Urdapilleta-Inchaurregui; Fabián Fernández-Luqueño; Aidé Torres; Daniela Roa-Velázquez; Francisco Javier Rodríguez-Varela; María Esther Sánchez-Castro. Nanocomposite Synthesis from a Natural Clay-Rich Soils and Exhausted Coffee Grounds for Environmental Applications. Journal of Nano Research 2020, 63, 47 -63.
AMA StyleVianey Urdapilleta-Inchaurregui, Fabián Fernández-Luqueño, Aidé Torres, Daniela Roa-Velázquez, Francisco Javier Rodríguez-Varela, María Esther Sánchez-Castro. Nanocomposite Synthesis from a Natural Clay-Rich Soils and Exhausted Coffee Grounds for Environmental Applications. Journal of Nano Research. 2020; 63 ():47-63.
Chicago/Turabian StyleVianey Urdapilleta-Inchaurregui; Fabián Fernández-Luqueño; Aidé Torres; Daniela Roa-Velázquez; Francisco Javier Rodríguez-Varela; María Esther Sánchez-Castro. 2020. "Nanocomposite Synthesis from a Natural Clay-Rich Soils and Exhausted Coffee Grounds for Environmental Applications." Journal of Nano Research 63, no. : 47-63.
In this work, three different Nd:YAG laser radiations (λ = 1064, 532, and 355 nm) were analyzed to obtain BN particles using pulsed laser ablation in liquids (PLALs). The effect of the laser energy in two reaction media (deionized water and acetone) during BN synthesis was analyzed through their structural, optical and photoluminescence properties. XRD patterns show the main reflections of h-BN and the existence of impurity phases that corresponds to c-BN or e-BN structures. The nanosecond laser energy is enough to transform h-BN hybridization from sp2 to sp3 and form new phases. The crystallite sizes (CS) of the h-BN particles grown in deionized water are between 66.4–68.8 nm for the three applied Nd:YAG harmonics. Similar CS were observed in colloidal BN particles fabricated in acetone (66.6–67.8 nm). The combination of the laser energy and reaction media modifies the BN particles morphology from platelets randomly oriented (D.W.) to melting-like structures (acetone). Size and melting degree are modified with the laser energy due to the capacity for plasma confinement of each reaction medium. Raman spectroscopy showed two vibrational modes dependent on the laser wavelength confirming that e-BN and c-BN phases coexist in the h-BN matrix. The formation of these secondary phases and morphological features are responsible of the differences in the optical properties. BN nanocrystals growth in D.W. like colloidal medium can act as UV shielding. Photoluminescence of BN structures (1064 nm) is observed in the range of 300–550 nm with a maximum emission at 3.26 eV. Due to the high structure disorder, the BN structures showed a broad emission with an intense luminescence that remain fairly constant after 48 h; resulting in blue luminescence character.
M.A. Domínguez-Crespo; E. Rodríguez; A.M. Torres-Huerta; I.J. Soni-Castro; S.B. Brachetti-Sibaja; R. Narro-García; A.B. López-Oyama. Production of BN nanostructures by pulsed laser ablation in liquids: Influence of the applied Nd:YAG harmonics on the structural, optical and photoluminescence properties. Ceramics International 2020, 46, 21667 -21680.
AMA StyleM.A. Domínguez-Crespo, E. Rodríguez, A.M. Torres-Huerta, I.J. Soni-Castro, S.B. Brachetti-Sibaja, R. Narro-García, A.B. López-Oyama. Production of BN nanostructures by pulsed laser ablation in liquids: Influence of the applied Nd:YAG harmonics on the structural, optical and photoluminescence properties. Ceramics International. 2020; 46 (13):21667-21680.
Chicago/Turabian StyleM.A. Domínguez-Crespo; E. Rodríguez; A.M. Torres-Huerta; I.J. Soni-Castro; S.B. Brachetti-Sibaja; R. Narro-García; A.B. López-Oyama. 2020. "Production of BN nanostructures by pulsed laser ablation in liquids: Influence of the applied Nd:YAG harmonics on the structural, optical and photoluminescence properties." Ceramics International 46, no. 13: 21667-21680.
The data shown in this document provides all the experimental data that complement the article published in Carbohydrate Polymers entitled “Influence of operating conditions on Proton Conductivity of Nanocellulose films using two Agroindustrial Wastes: Sugarcane Bagasse and Pinewood Sawdust” [1]. The data of this paper are the result of a large series of experiments to optimize the extraction of cellulose nanocrystalline (CNC) from these two agro-industrial wastes: sugarcane Bagasse (SCB) and pinewood sawdust (PSW). The conditions of pretreatment (5 wt.% or 10 wt.% of NaOH) and hydrolysis temperature (60, 75 and 90°C) in an aqueous solution of 45 wt.% of H2SO4 were analyzed exhaustively. The data includes the characterization by Fourier transform infrared (FT-IR), Differential Scanning Calorimetry/Thermogravimetric Analysis (DSC/TGA), Dynamic Light Scattering (DLS), X-ray diffraction (XRD) patterns, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) micrographs with their corresponding SAED patterns and nanoindentation tests. Additionally, photographs during the isolation of cellulose nanocrystalline in dependence of the syntheses parameters. It is also included the data that complement the molecular dynamic simulation generated by GLYCAM carbohydrate builder based on the coordinates for alpha and beta cellulose considering a microfibril of 5, 10 and 20 glucosyl residues (degree of polymerization, DP). Overall data have not been previously published and are available contributing to a better understanding of the CNCs isolation through different pretreatment concentrations and temperatures of processing.
A. Macías-Almazán; J.A. Lois-Correa; M.A. Domínguez-Crespo; Ana Bertha Lopez-Oyama; A.M. Torres-Huerta; Silvia Beatriz Brachetti-Sibaja; A.E. Rodríguez-Salazar. Dataset of operating conditions to Isolate Cellulose Nanocrystalline from Sugarcane Bagasse and Pinewood Sawdust as Possible Material to Fabricate Polymer Electrolyte Membranes. Data in Brief 2020, 30, 105597 .
AMA StyleA. Macías-Almazán, J.A. Lois-Correa, M.A. Domínguez-Crespo, Ana Bertha Lopez-Oyama, A.M. Torres-Huerta, Silvia Beatriz Brachetti-Sibaja, A.E. Rodríguez-Salazar. Dataset of operating conditions to Isolate Cellulose Nanocrystalline from Sugarcane Bagasse and Pinewood Sawdust as Possible Material to Fabricate Polymer Electrolyte Membranes. Data in Brief. 2020; 30 ():105597.
Chicago/Turabian StyleA. Macías-Almazán; J.A. Lois-Correa; M.A. Domínguez-Crespo; Ana Bertha Lopez-Oyama; A.M. Torres-Huerta; Silvia Beatriz Brachetti-Sibaja; A.E. Rodríguez-Salazar. 2020. "Dataset of operating conditions to Isolate Cellulose Nanocrystalline from Sugarcane Bagasse and Pinewood Sawdust as Possible Material to Fabricate Polymer Electrolyte Membranes." Data in Brief 30, no. : 105597.
Cellulose nanocrystals (CNCs) were isolated from two-agroindustrial wastes: sugarcane bagasse (SCB) and pinewood sawdust (PWS), to analyze their chemical, structural, morphological, and proton conduction properties in dependence of the synthesis parameters. In both sources, the isolated CNCs correspond to the monoclinic phase of cellulose type I and II. For SCB, the smallest CNCs were isolated, in a range of 3–10 nm, with 5 wt.% of NaOH and 60 °C of acid hydrolysis. PWS displayed the smallest sizes at 75 °C and 10 wt.% NaOH (40–110 nm). Membrane characterization suggests that isolated CNCs, between 75 and 90 °C of acid hydrolysis and 10 wt.% NaOH from both SCB and PWS sources, displayed an important increase in the proton conductivity, 1.23(±0.61)×10−5 and 9.26 (±0.24)×10-5 S-m-1, respectively. Thus, with proper synthesis conditions, CNCs can be potentially used as based element to obtain other proton conductor materials to fabricate PEMs.
A. Macías-Almazán; J.A. Lois-Correa; M.A. Domínguez-Crespo; Ana Bertha Lopez-Oyama; A.M. Torres-Huerta; S.B. Brachetti-Sibaja; A.E. Rodríguez-Salazar. Influence of operating conditions on proton conductivity of nanocellulose films using two agroindustrial wastes: Sugarcane bagasse and pinewood sawdust. Carbohydrate Polymers 2020, 238, 116171 .
AMA StyleA. Macías-Almazán, J.A. Lois-Correa, M.A. Domínguez-Crespo, Ana Bertha Lopez-Oyama, A.M. Torres-Huerta, S.B. Brachetti-Sibaja, A.E. Rodríguez-Salazar. Influence of operating conditions on proton conductivity of nanocellulose films using two agroindustrial wastes: Sugarcane bagasse and pinewood sawdust. Carbohydrate Polymers. 2020; 238 ():116171.
Chicago/Turabian StyleA. Macías-Almazán; J.A. Lois-Correa; M.A. Domínguez-Crespo; Ana Bertha Lopez-Oyama; A.M. Torres-Huerta; S.B. Brachetti-Sibaja; A.E. Rodríguez-Salazar. 2020. "Influence of operating conditions on proton conductivity of nanocellulose films using two agroindustrial wastes: Sugarcane bagasse and pinewood sawdust." Carbohydrate Polymers 238, no. : 116171.
J.J. De la Cruz-Cruz; M.A. Domínguez-Crespo; E. Ramírez-Meneses; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; Nicolas Cayetano; H.J. Dorantes-Rosales. Efficient stabilization of in situ fabrication of PtxPd1-x nanostructures for electro-oxidation of methanol in alkaline medium. International Journal of Hydrogen Energy 2020, 45, 4570 -4586.
AMA StyleJ.J. De la Cruz-Cruz, M.A. Domínguez-Crespo, E. Ramírez-Meneses, Aidé Torres, Silvia Beatriz Brachetti-Sibaja, Nicolas Cayetano, H.J. Dorantes-Rosales. Efficient stabilization of in situ fabrication of PtxPd1-x nanostructures for electro-oxidation of methanol in alkaline medium. International Journal of Hydrogen Energy. 2020; 45 (7):4570-4586.
Chicago/Turabian StyleJ.J. De la Cruz-Cruz; M.A. Domínguez-Crespo; E. Ramírez-Meneses; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; Nicolas Cayetano; H.J. Dorantes-Rosales. 2020. "Efficient stabilization of in situ fabrication of PtxPd1-x nanostructures for electro-oxidation of methanol in alkaline medium." International Journal of Hydrogen Energy 45, no. 7: 4570-4586.
Structural, compositional, morphological and electrochemical characterization are important to determinate the influence of platinum in the methanol oxidation in alkaline media. These data and analysis support the research article catalytic performance of alloyed PtxPd1-x nanostructures supported on Vulcan XC-72R for the methanol oxidation in alkaline medium [1]. The data here presented included changes in the chemical composition, structure and microstructure. Also, complement data of cyclic voltammograms during activation in alkaline media as well as in presence of 1 M CH3OH to observe CO tolerance and Electrochemical Impedance Spectroscopy measurements at two different overpotentials (0.2 and 0.3 mV) on the onset potential for methanol electro-oxidation are published in this paper. The data can be used as a reference to determinate the effect of added different amounts of Pd to Pt/C catalysts, using an organometallic compounds method and octylamine as stabilizer. The data provided in this article have not been previously published and are available to enable critical or extended analyses.
J.J. De La Cruz-Cruz; M.A. Domínguez-Crespo; E. Ramírez-Meneses; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; N. Cayetano-Castro; H.J. Dorantes-Rosales. Data that support the structural, chemical and morphological characterization and its influence on the electrochemical performance of stabilized PdxPt1-x alloys as electrode materials for methanol oxidation in alkaline medium. Data in Brief 2020, 29, 105172 .
AMA StyleJ.J. De La Cruz-Cruz, M.A. Domínguez-Crespo, E. Ramírez-Meneses, Aidé Torres, Silvia Beatriz Brachetti-Sibaja, N. Cayetano-Castro, H.J. Dorantes-Rosales. Data that support the structural, chemical and morphological characterization and its influence on the electrochemical performance of stabilized PdxPt1-x alloys as electrode materials for methanol oxidation in alkaline medium. Data in Brief. 2020; 29 ():105172.
Chicago/Turabian StyleJ.J. De La Cruz-Cruz; M.A. Domínguez-Crespo; E. Ramírez-Meneses; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; N. Cayetano-Castro; H.J. Dorantes-Rosales. 2020. "Data that support the structural, chemical and morphological characterization and its influence on the electrochemical performance of stabilized PdxPt1-x alloys as electrode materials for methanol oxidation in alkaline medium." Data in Brief 29, no. : 105172.
Three organic compounds containing azole rings 1-benzyl-4-phenyl-1H-1,2,3-triazole (I1), 5-phenyl-3-propylisoxazole (I2), and 3,5-diphenylisoxazole (I3) were synthesized and characterized as corrosion inhibitors on galvanized steel and copper-nickel (Cu-Ni, 90/10) substrates. The three tested azole inhibitors acted as corrosion inhibitors on galvanized steel in the presence of real cooling water used as electrolyte. Electrochemical performance indicated that the presence of heteroatoms, such as N and O, with free pair electrons, the chain length, and the aromatic ring plays an important role in the capacity to inhibit corrosion of galvanized steel. 3,5-diphenylisoxazole (I3) has the best inhibition activity with jcorr of 2.04 × 10−7 (5 ppm), 7.57 × 10−8 (10 ppm), and 1.73 × 10−8 (20 ppm) A cm−2, followed by compounds I1 and I2. The synthesized compounds are comparable or even higher than the electrochemical performance of commercial inhibitor tolyltriazole (TTA, jcorr = 3.06 × 10−8 A cm−2). Conversely, for Cu-Ni (90/10) substrates, commercial TTA with 20 ppm displayed the lowest corrosion current densities (jcorr = 3.20 × 10−8 A cm−2) through a characteristic anodic pseudo-passivation; however, pits were observed after ~550 mVAg/AgCl. In contrast, the synthesized compounds tended to suppress anodic copper dissolution at positive potentials but, in the best case, displayed greater corrosion rates I3 (1.463 mils per year (MPY)), I2 (1.515 MPY), and I1 (0.677 MPY) in comparison with TTA (0.091 MPY). The low inhibition efficiency (IE) of synthesized compounds is correlated to the weak absorption on the copper surface.
M. A. Domínguez-Crespo; L. Gerardo Zepeda-Vallejo; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; D. Palma-Ramírez; A. E. Rodríguez-Salazar; D. E. Ontiveros-De La Torre. New Triazole and Isoxazole Compounds as Corrosion Inhibitors for Cu-Ni (90/10) Alloy and Galvanized Steel Substrates. Metallurgical and Materials Transactions A 2020, 51, 1822 -1845.
AMA StyleM. A. Domínguez-Crespo, L. Gerardo Zepeda-Vallejo, Aidé Torres, Silvia Beatriz Brachetti-Sibaja, D. Palma-Ramírez, A. E. Rodríguez-Salazar, D. E. Ontiveros-De La Torre. New Triazole and Isoxazole Compounds as Corrosion Inhibitors for Cu-Ni (90/10) Alloy and Galvanized Steel Substrates. Metallurgical and Materials Transactions A. 2020; 51 (4):1822-1845.
Chicago/Turabian StyleM. A. Domínguez-Crespo; L. Gerardo Zepeda-Vallejo; Aidé Torres; Silvia Beatriz Brachetti-Sibaja; D. Palma-Ramírez; A. E. Rodríguez-Salazar; D. E. Ontiveros-De La Torre. 2020. "New Triazole and Isoxazole Compounds as Corrosion Inhibitors for Cu-Ni (90/10) Alloy and Galvanized Steel Substrates." Metallurgical and Materials Transactions A 51, no. 4: 1822-1845.
The data set presented here offers evidence of the elemental composition related to a SEM micrograph of [Mn5(PO3(OH))2(PO4)2⋅4H2O] (MnPhos) powders, known as hurealite, and synthesized by the reflux method. In addition, it contains additional information of the glass transition, melting and decomposition temperatures and their weight loss percent of coatings based on MnPhos incorporated into waterborne poly(urethane) (WPU). These data are complementing of the article “Corrosion investigation of new hybrid organic/inorganic coatings for carbon steel substrates: electrochemical and surface characterizations”.
P. Salazar-Bravo; A.M. Torres-Huerta; D. Del Angel-López; M.A. Domínguez-Crespo; D. Palma-Ramírez; Ana Bertha Lopez-Oyama. Data supporting the elemental composition, the morphological and thermal properties of MnPhos/waterborne poly(urethane)(WPU) coatings for carbon steel. Data in Brief 2020, 29, 105121 .
AMA StyleP. Salazar-Bravo, A.M. Torres-Huerta, D. Del Angel-López, M.A. Domínguez-Crespo, D. Palma-Ramírez, Ana Bertha Lopez-Oyama. Data supporting the elemental composition, the morphological and thermal properties of MnPhos/waterborne poly(urethane)(WPU) coatings for carbon steel. Data in Brief. 2020; 29 ():105121.
Chicago/Turabian StyleP. Salazar-Bravo; A.M. Torres-Huerta; D. Del Angel-López; M.A. Domínguez-Crespo; D. Palma-Ramírez; Ana Bertha Lopez-Oyama. 2020. "Data supporting the elemental composition, the morphological and thermal properties of MnPhos/waterborne poly(urethane)(WPU) coatings for carbon steel." Data in Brief 29, no. : 105121.
The data presented in this article are related to the research previously published "improvement of adhesion and barrier properties of biomedical stainless steel by deposition of YSZ coatings using RF magnetron sputtering". It contains the structural, morphological, compositional and electrochemical characterization of bare AISI 316L substrate which was used as a substrate to coat with yttria-stabilized zirconia (YSZ). The chemical composition and topography analyses from X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES) and micrographs from atomic force microscopy (AFM) as well as the roughness value of the YSZ-sputtered coating on AISI 316L substrates are presented as complementary data of the article.
Z.E. Sánchez-Hernández; M.A. Domínguez-Crespo; Aidé Torres; D. Palma-Ramírez; E. Onofre-Bustamante; H. Dorantes-Rosales; J.A. Andraca Adame. Dataset of the synthesis parameters to deposit YSZ on stainless steel AISI 316L by sputtering technique. Data in Brief 2019, 26, 104480 .
AMA StyleZ.E. Sánchez-Hernández, M.A. Domínguez-Crespo, Aidé Torres, D. Palma-Ramírez, E. Onofre-Bustamante, H. Dorantes-Rosales, J.A. Andraca Adame. Dataset of the synthesis parameters to deposit YSZ on stainless steel AISI 316L by sputtering technique. Data in Brief. 2019; 26 ():104480.
Chicago/Turabian StyleZ.E. Sánchez-Hernández; M.A. Domínguez-Crespo; Aidé Torres; D. Palma-Ramírez; E. Onofre-Bustamante; H. Dorantes-Rosales; J.A. Andraca Adame. 2019. "Dataset of the synthesis parameters to deposit YSZ on stainless steel AISI 316L by sputtering technique." Data in Brief 26, no. : 104480.
ZnO nanoparticles were synthesized by the traditional sol–gel method followed by a thermal treatment at different temperatures (673 K, 873 K, or 1073 K) and addition of different amounts (2, 4, or 6 wt pct) into a commercial waterborne polyurethane (WBPU) matrix in order to produce hybrid coatings for corrosion inhibition of AISI 1018 carbon steel (CS). The different hybrid coatings were deposited by the spraying method after being magnetically stirred for 60 minutes. The effects of the thermal treatments on the structural, optical, and morphological properties of ZnO particles were analyzed by X-ray diffraction, ultraviolet visible spectroscopy (UV–vis), and scanning electron microscopy. Changes in the electrochemical performances of waterborne polyurethane-coated carbon steel attributable to the incorporation of ZnO powders were investigated by the open-circuit potential, electrochemical impedance spectroscopy, and potentiodynamic polarization techniques in chloride medium. Also, structural, chemical, and mechanical properties were characterized in the hybrid coatings to evaluate the interaction type, UV degradation, adhesion, and hardness. The results revealed that the crystallite size of ZnO particles was within the interval ranging from 33.10 ± 0.02 to 72.00 ± 0.05 nm, which increased with the increasing temperature of thermal treatment. The treatment temperature modified the morphology of the ZnO particles, where a rod-type morphology was observed at 673 K, whereas agglomerated hexagonal facets were obtained at 1073 K. ZnO powders can reinforce the optical properties of WBPU coatings, which could delay the structural damage of the polymer, particularly in the UV region, and transparency can be modulated depending on the crystallite size, the amount of added ZnO, and the thermal treatment. The 6 wt pct (673 K) loading of ZnO particles during the WBPU polymerization improved the mechanical properties from 79.2 ± 4 to 165.5 ± 0.1 MPa. The electrochemical performance suggests that ZnO reinforced the barrier properties of WBPU, but at the same time supplied active protection by precipitating zinc hydroxide species in the cathodic sites. Kinetic parameters and impedance analysis showed that hybrid coatings containing 6 wt pct of the treated ZnO particles (673 K) displayed the best protection efficiency of AISI 1018 CS.
P. Salazar-Bravo; D. Del Angel-López; A. M. Torres-Huerta; M. A. Domínguez-Crespo; D. Palma-Ramírez; S. B. Brachetti-Sibaja; A. C. Ferrel-Álvarez. Investigation of ZnO/Waterborne Polyurethane Hybrid Coatings for Corrosion Protection of AISI 1018 Carbon Steel Substrates. Metallurgical and Materials Transactions A 2019, 50, 4798 -4813.
AMA StyleP. Salazar-Bravo, D. Del Angel-López, A. M. Torres-Huerta, M. A. Domínguez-Crespo, D. Palma-Ramírez, S. B. Brachetti-Sibaja, A. C. Ferrel-Álvarez. Investigation of ZnO/Waterborne Polyurethane Hybrid Coatings for Corrosion Protection of AISI 1018 Carbon Steel Substrates. Metallurgical and Materials Transactions A. 2019; 50 (10):4798-4813.
Chicago/Turabian StyleP. Salazar-Bravo; D. Del Angel-López; A. M. Torres-Huerta; M. A. Domínguez-Crespo; D. Palma-Ramírez; S. B. Brachetti-Sibaja; A. C. Ferrel-Álvarez. 2019. "Investigation of ZnO/Waterborne Polyurethane Hybrid Coatings for Corrosion Protection of AISI 1018 Carbon Steel Substrates." Metallurgical and Materials Transactions A 50, no. 10: 4798-4813.
This work examines the synthesis of Mn5(PO3(OH))2(PO4)2⋅4H2O particles (MnPhos) by reflux method, it was proposed their addition into waterborne polyurethane and used as hybrid coatings to improve the barrier properties of AISI 1018 carbon steel substrates. The effect of different MnPhos amounts (2, 4 and 6 wt.%) and dispersion times (30, 60 and 120 min) on the corrosion properties in chloride medium (3.0 wt.%) were determined using electrochemical impedance spectroscopy (EIS). Additional characterizations to evaluate changes in the structural, morphological, UV absorption and mechanical properties were realized by X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), ultraviolet visible spectroscopy (UV–vis), nanoindentation and adhesion test were also evaluated. MnPhos particles correspond with a monoclinic structure and a prismatic morphology of ˜10 μm in length. The addition of MnPhos particles into the waterborne polyurethane (WPU) matrix helps to reduce the polymer degradation under UV-light by inducing a microphase separation phenomenon between the hard and soft segments. Mechanical and corrosion properties also increased by incorporating different amounts of MnPhos particles but, an adequate modulation in the final properties was observed with an amount of 4 wt.% after 30 min of dispersion.
P. Salazar-Bravo; D. Del Ángel-López; A.M. Torres-Huerta; M.A. Domínguez-Crespo; D. Palma-Ramírez; Ana Bertha Lopez-Oyama. Corrosion investigation of new hybrid organic/inorganic coatings for carbon steel substrates: Electrochemical and surface characterizations. Progress in Organic Coatings 2019, 135, 51 -64.
AMA StyleP. Salazar-Bravo, D. Del Ángel-López, A.M. Torres-Huerta, M.A. Domínguez-Crespo, D. Palma-Ramírez, Ana Bertha Lopez-Oyama. Corrosion investigation of new hybrid organic/inorganic coatings for carbon steel substrates: Electrochemical and surface characterizations. Progress in Organic Coatings. 2019; 135 ():51-64.
Chicago/Turabian StyleP. Salazar-Bravo; D. Del Ángel-López; A.M. Torres-Huerta; M.A. Domínguez-Crespo; D. Palma-Ramírez; Ana Bertha Lopez-Oyama. 2019. "Corrosion investigation of new hybrid organic/inorganic coatings for carbon steel substrates: Electrochemical and surface characterizations." Progress in Organic Coatings 135, no. : 51-64.
These data display evidence of the fracture through the morphologies and the topographical features as well as roughness data of different ratios of R(recycled)-PET/PLA, PET(virgin)/PLA, PET(virgin)/Chitosan and R(recycled)-PET/chitosan. Also, data of the morphologies after degradation under accelerated weathering test and degradation mechanisms are revealed. The data supplement the article “Comparative assessment of miscibility and degradability on PET/PLA and PET/chitosan blends”.
D. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; Deyanira Del Angel-López; A.I. Flores-Vela; Daniel de la Fuente. Data supporting the morphological/topographical properties and the degradability on PET/PLA and PET/chitosan blends. Data in Brief 2019, 25, 104012 .
AMA StyleD. Palma-Ramírez, A.M. Torres-Huerta, M.A. Domínguez-Crespo, Deyanira Del Angel-López, A.I. Flores-Vela, Daniel de la Fuente. Data supporting the morphological/topographical properties and the degradability on PET/PLA and PET/chitosan blends. Data in Brief. 2019; 25 ():104012.
Chicago/Turabian StyleD. Palma-Ramírez; A.M. Torres-Huerta; M.A. Domínguez-Crespo; Deyanira Del Angel-López; A.I. Flores-Vela; Daniel de la Fuente. 2019. "Data supporting the morphological/topographical properties and the degradability on PET/PLA and PET/chitosan blends." Data in Brief 25, no. : 104012.
The treatment of agroindustrial residues is an alternative to waste management and obtain products with added value. In this article, we describe the confocal microscopy images, the microbiological data, policosanol content and color measurement linked to the paper “production of dietary fibers from sugarcane bagasse and sugarcane tops using microwave - assisted alkaline treatments”. The data contain photographs after elaboration of noodles-type pasta and chapatti-type fermented bread; the confocal laser scanning micrographs, before and after including sugarcane bagasse and sugarcane tops fibers in foods. Microbiological analyses of total coliforms, molds and yeasts, and aerobic mesophiles were also presented according to Mexican Standard NOM- 247-SSA1-2008 which confirmed that the food is safe for human consumption. The data provided in this article have not been previously published and are available to enable critical or extended analyses.
D.I. Llanes Gil-López; J.A. Lois-Correa; M.E. Sánchez-Pardo; M.A. Domínguez-Crespo; Aidé Torres; A.E. Rodríguez-Salazar; V.N. Orta-Guzmán. Data supporting the production of dietary fibers from sugarcane bagasse and sugarcane tops using microwave - assisted alkaline treatments. Data in Brief 2019, 24, 104026 .
AMA StyleD.I. Llanes Gil-López, J.A. Lois-Correa, M.E. Sánchez-Pardo, M.A. Domínguez-Crespo, Aidé Torres, A.E. Rodríguez-Salazar, V.N. Orta-Guzmán. Data supporting the production of dietary fibers from sugarcane bagasse and sugarcane tops using microwave - assisted alkaline treatments. Data in Brief. 2019; 24 ():104026.
Chicago/Turabian StyleD.I. Llanes Gil-López; J.A. Lois-Correa; M.E. Sánchez-Pardo; M.A. Domínguez-Crespo; Aidé Torres; A.E. Rodríguez-Salazar; V.N. Orta-Guzmán. 2019. "Data supporting the production of dietary fibers from sugarcane bagasse and sugarcane tops using microwave - assisted alkaline treatments." Data in Brief 24, no. : 104026.