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Dr. Cristina Cazan
Transilvania University of Brasov, Product Design and Environment Faculty, Product Design, Mechatronics and Environment Department Brasov, Romania

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0 Biotechnology
0 Waste Management
0 Composite materials
1 Environmental Assessment
0 materials characterization

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Composite materials
Surface and interface science

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Review
Published: 20 June 2021 in Polymers
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Nanocomposites with polymer matrix offer excellent opportunities to explore new functionalities beyond those of conventional materials. TiO2, as a reinforcement agent in polymeric nanocomposites, is a viable strategy that significantly enhanced their mechanical properties. The size of the filler plays an essential role in determining the mechanical properties of the nanocomposite. A defining feature of polymer nanocomposites is that the small size of the fillers leads to an increase in the interfacial area compared to traditional composites. The interfacial area generates a significant volume fraction of interfacial polymer, with properties different from the bulk polymer even at low loadings of the nanofiller. This review aims to provide specific guidelines on the correlations between the structures of TiO2 nanocomposites with polymeric matrix and their mechanical properties. The correlations will be established and explained based on interfaces realized between the polymer matrix and inorganic filler. The paper focuses on the influence of the composition parameters (type of polymeric matrix, TiO2 filler with surface modified/unmodified, additives) and technological parameters (processing methods, temperature, time, pressure) on the mechanical strength of TiO2 nanocomposites with the polymeric matrix.

ACS Style

Cristina Cazan; Alexandru Enesca; Luminita Andronic. Synergic Effect of TiO2 Filler on the Mechanical Properties of Polymer Nanocomposites. Polymers 2021, 13, 2017 .

AMA Style

Cristina Cazan, Alexandru Enesca, Luminita Andronic. Synergic Effect of TiO2 Filler on the Mechanical Properties of Polymer Nanocomposites. Polymers. 2021; 13 (12):2017.

Chicago/Turabian Style

Cristina Cazan; Alexandru Enesca; Luminita Andronic. 2021. "Synergic Effect of TiO2 Filler on the Mechanical Properties of Polymer Nanocomposites." Polymers 13, no. 12: 2017.

Journal article
Published: 13 November 2020 in Applied Sciences
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Ternary composites of TiO2–CuxS–fly ash were used in simultaneous adsorption and photocatalysis processes for the removal of organic (dye) pollutants. Composites of semiconductor (TiO2, CuxS) nanomaterials hosted within matrices of fly ash, such as film heterostructures, are promising materials for advanced wastewater treatment. The combination of adsorption and photocatalysis processes was investigated in the removal of methylene blue (MB), considered as a standard in photocatalysis. Ternary film heterostructures obtained by doctor blade technique allows overcoming the separation step of particles from treated wastewater. The comparison between the adsorption and photodegradation tests performed with TiO2–CuxS–fly ash showed that in dark conditions, the MB removal was 75% after 360 min, while in the presence of UV radiation, almost total dismissal of MB was achieved in the same treatment period. The degradation rate of MB, when H2O2 is used as an electron acceptor, could reach 90% in adsorption and 99% in simultaneous adsorption/photocatalysis processes. The adsorption isotherm was found to follow the Langmuir and Freundlich models.

ACS Style

Luminita Andronic; Luminita Isac; Cristina Cazan; Alexandru Enesca. Simultaneous Adsorption and Photocatalysis Processes Based on Ternary TiO2–CuxS–Fly Ash Hetero-Structures. Applied Sciences 2020, 10, 8070 .

AMA Style

Luminita Andronic, Luminita Isac, Cristina Cazan, Alexandru Enesca. Simultaneous Adsorption and Photocatalysis Processes Based on Ternary TiO2–CuxS–Fly Ash Hetero-Structures. Applied Sciences. 2020; 10 (22):8070.

Chicago/Turabian Style

Luminita Andronic; Luminita Isac; Cristina Cazan; Alexandru Enesca. 2020. "Simultaneous Adsorption and Photocatalysis Processes Based on Ternary TiO2–CuxS–Fly Ash Hetero-Structures." Applied Sciences 10, no. 22: 8070.

Review
Published: 03 October 2020 in Nanomaterials
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The impact of volatile organic compounds (VOCs) on indoor air quality and, furthermore, on human health is still a subject of research investigations considering the large increase in forms of cancer and related diseases. VOCs can be 10 times higher in indoor air concentrations then that of the outdoors, as a consequence of emissions from electronics, building materials and consumer goods. Direct transformation of VOCs in mineralization products seems to be an alternative to reduce indoor air contaminants. The advantage of photocatalysis implementation in indoor air treatment is given by the absence of additional chemicals (such as H2O2) and waste. The present mini-review presents a comparative study on VOCs photocatalytic removal considering the photocatalyst composition, morphology and specific surface. The sheet-like morphology seems to provide a higher number of active sites which may contribute to oxidative reactions. The insertion of materials able to increase light absorbance or to mediate the charge carrier’s transport will have a beneficial impact on the overall photocatalytic efficiency. Additionally, surface chemistry must be considered when developing photocatalysts for certain gas pollutants in order to favor molecule absorbance in the interfacial region. An energy consumption perspective is given based on the light intensity and irradiation period.

ACS Style

Alexandru Enesca; Cristina Cazan. Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review. Nanomaterials 2020, 10, 1965 .

AMA Style

Alexandru Enesca, Cristina Cazan. Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review. Nanomaterials. 2020; 10 (10):1965.

Chicago/Turabian Style

Alexandru Enesca; Cristina Cazan. 2020. "Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review." Nanomaterials 10, no. 10: 1965.

Journal article
Published: 31 December 2019 in Polymers
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Nowadays, global warming, energy issues and environmental concern have forced energy production stakeholders to find new low carbon solutions. Photovoltaic technologies as renewable energy resources represent a competitive way for the transition from conventional fossil fuels towards a renewable energy economy. The highest renewable energy systems (RES) market share is based on silicon photovoltaic (Si-PV). The installed RES have rapidly increased over the last two decades, but, after the end of their service life, they will be disposed of. Therefore, the constant increase of the installed RES has attracted the global concern due to their impact on the environment and, most of all, due to the content of their valuable resources. However, the rational management of RES waste has not been addressed so far. The paper represents an extension of a previous work focused on Si-PV recycling by developing all waste hybrid composites. The extension research conducted in this paper is related to the influence of Si-PV characteristics on the mechanical performances and water stability of the hybrid composites. All waste hybrid composites developed by embedding different Si-PV grain sizes were tested before and after water immersion in terms of mechanical strength, interfacial adhesion, crystallinity and morphology by scanning electron microscopy (SEM) analyses. The results revealed the better performance of such Si-PV composites compared to that of sieved composites even after long term water immersion. Therefore, high-content Si-PV hybrid composites could be developed without Si-PV powder sieving. Further on, all waste hybrid composites could be used as paving slabs, protective barriers for outdoor applications.

ACS Style

Mihaela Cosnita; Ileana Manciulea; Cristina Cazan. All-Waste Hybrid Composites with Waste Silicon Photovoltaic Module. Polymers 2019, 12, 53 .

AMA Style

Mihaela Cosnita, Ileana Manciulea, Cristina Cazan. All-Waste Hybrid Composites with Waste Silicon Photovoltaic Module. Polymers. 2019; 12 (1):53.

Chicago/Turabian Style

Mihaela Cosnita; Ileana Manciulea; Cristina Cazan. 2019. "All-Waste Hybrid Composites with Waste Silicon Photovoltaic Module." Polymers 12, no. 1: 53.

Mini review article
Published: 23 October 2019 in Frontiers in Chemistry
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The presence of toxic, non-biodegradable and harmful organic pollutants in soils, wastewater, and atmosphere has become an indisputable, and global fact as a significant environmental problem. The heterogeneous photocatalysis, an advanced oxidation process (AOP) using semiconductor materials as catalysts, is a topic of great interest considering the possibility of the pollutants removal from water. The photocatalytic degradation of organic contaminants (i.e., dyes, pesticides, phenolic compounds) present in water using semiconductor materials depends on a number of parameters such as: the bandgap energy, phase composition, crystallinity, morphology and surface area of catalyst, electron-hole recombination rate, intensity of light, and adsorption capacity of the dye on the photocatalyst surface. One of the important constraints related to the catalyst photocatalytic efficiency is the fast recombination of the photogenerated electrons and holes. Therefore, various strategies have been involved in promoting the charge separation, including the development of heterojunction between two semiconductor materials, by tailoring the photocatalysts properties. This mini-review deals with the recent developments on dyes photodegradation using as catalysts various heterojunctions based on copper sulfide nanostructures, such as copper sulfide/metal oxide, copper sulfide/metal sulfide, copper sulfide/graphene, copper sulfide/organic semiconductors etc. The effects of different parameters, such as synthesis parameters, particle size, bandgap energy, surface area, and morphology on the photocatalytic activity of copper sulfide heterojunctions for dyes degradation is also highlighted.

ACS Style

Luminita Isac; Cristina Cazan; Alexandru Enesca; Luminita Andronic. Copper Sulfide Based Heterojunctions as Photocatalysts for Dyes Photodegradation. Frontiers in Chemistry 2019, 7, 694 .

AMA Style

Luminita Isac, Cristina Cazan, Alexandru Enesca, Luminita Andronic. Copper Sulfide Based Heterojunctions as Photocatalysts for Dyes Photodegradation. Frontiers in Chemistry. 2019; 7 ():694.

Chicago/Turabian Style

Luminita Isac; Cristina Cazan; Alexandru Enesca; Luminita Andronic. 2019. "Copper Sulfide Based Heterojunctions as Photocatalysts for Dyes Photodegradation." Frontiers in Chemistry 7, no. : 694.

Journal article
Published: 08 October 2018 in Journal of Cleaner Production
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The aim of this study is the development of new multifunctional composites with controlled interface properties, for products dedicated to the sustainable built environment. The composites were obtained from recycled materials: rubber from waste tyres as matrix, polyethylene terephthalate (PET) as reinforcement material and high density polyethylene (HDPE) as additive. Composites composition was varied by using ceramic powders (TiO2, CaO, ZnO, fly ash) as low content fillers to increase mechanical performance, as result of improving interfaces properties between tyre rubber and PET. The interface properties of PET - rubber composites with different oxide fillers were investigated after the samples were kept in two temperatures domains, selected according to the outdoor applications of these materials; the testing domains were: + 10 ºC / + 50 ºC (series I) and - 40 ºC /- 10 ºC (series II). The composites properties are strongly influenced by the components type and by the interface between the oxide particles and the polymer matrix. Atomic Force Microscopy (AFM) was used to evaluate the surface morphology. The surface energy variations and the interface properties were evaluated using contact angle measurements, while the crystalline structure was studied by X-ray diffraction (XRD) and the chemical/physical interactions by Fourier Transform Infrared spectroscopy (FTIR). The structural results are consistent with the mechanical tests results and show that the interface properties are improved by adding different metallic oxides and fly ash as fillers in the composite. The best results are obtained by using fly ash for low temperature applications and CaO for high temperature use.

ACS Style

Cristina Cazan; Mihaela Cosnita; Luminita Isac. The influence of temperature on the performance of rubber - PET-HDPE waste -based composites with different inorganic fillers. Journal of Cleaner Production 2018, 208, 1030 -1040.

AMA Style

Cristina Cazan, Mihaela Cosnita, Luminita Isac. The influence of temperature on the performance of rubber - PET-HDPE waste -based composites with different inorganic fillers. Journal of Cleaner Production. 2018; 208 ():1030-1040.

Chicago/Turabian Style

Cristina Cazan; Mihaela Cosnita; Luminita Isac. 2018. "The influence of temperature on the performance of rubber - PET-HDPE waste -based composites with different inorganic fillers." Journal of Cleaner Production 208, no. : 1030-1040.

Journal article
Published: 01 November 2017 in Journal of Cleaner Production
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ACS Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. The influence of inorganic additive on the water stability and mechanical properties of recycled rubber, polyethylene terephthalate, high density polyethylene and wood composites. Journal of Cleaner Production 2017, 165, 630 -636.

AMA Style

Mihaela Cosnita, Cristina Cazan, Anca Duta. The influence of inorganic additive on the water stability and mechanical properties of recycled rubber, polyethylene terephthalate, high density polyethylene and wood composites. Journal of Cleaner Production. 2017; 165 ():630-636.

Chicago/Turabian Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. 2017. "The influence of inorganic additive on the water stability and mechanical properties of recycled rubber, polyethylene terephthalate, high density polyethylene and wood composites." Journal of Cleaner Production 165, no. : 630-636.

Journal article
Published: 01 March 2017 in Arabian Journal of Chemistry
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The functionalization of polyethylene terephthalate (PET) from tire rubber–PET–high density polyethylene (HDPE) composites represents a key strategy for improving the composite properties. This is a practical and effective method to improve the interface between matrix (waste tire rubber) and fillers (waste PET and HDPE). By PET functionalization, adherence and surface properties of composite materials can be controlled. PET functionalization was performed with polyethylene glycol (PEG 400, 1%) and sodium dodecyl sulphate (SDS 1%). The characterization of the components and composite are discussed in terms of surface energy values (evaluated from water contact angle measurements) and surface morphology by using scanning electron microscopy (SEM). The structural and conformational changes were investigated by Fourier Transform Infrared (FTIR) Spectroscopy while the crystalline structure was studied by X-ray diffraction (XRD). The improved interfacial adhesion, thermal stability and mechanical properties (stress–strain, compression and impact resistance) of the composites are correlated with the PET functionalization, with non-ionic (PEG) and an anionic surfactant (SDS). The results proved that the interface properties are improved by functionalization of PET. The best mechanical properties were recorded at 30 min moulding. The samples with 45% PET–SDS showed the best combination of mechanical properties: tensile strength (1.56 N/mm2), impact strength (43.72 kJ/m2) and compression (158.78 N/mm2).

ACS Style

Cristina Cazan; Mihaela Cosnita; Anca Duta. Effect of PET functionalization in composites of rubber–PET–HDPE type. Arabian Journal of Chemistry 2017, 10, 300 -312.

AMA Style

Cristina Cazan, Mihaela Cosnita, Anca Duta. Effect of PET functionalization in composites of rubber–PET–HDPE type. Arabian Journal of Chemistry. 2017; 10 (3):300-312.

Chicago/Turabian Style

Cristina Cazan; Mihaela Cosnita; Anca Duta. 2017. "Effect of PET functionalization in composites of rubber–PET–HDPE type." Arabian Journal of Chemistry 10, no. 3: 300-312.

Research article
Published: 28 July 2016 in Journal of Composite Materials
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The paper investigates new composites fully based on wastes of polyethylene terephthalate, rubber, high-density polyethylene, and wood, aiming at multifunctional, environmental-friendly materials, for indoor and outdoor applications. The rubber: polyethylene terephthalate: high-density polyethylene: wood ratio and compression molding temperatures are optimized considering the output mechanical properties, focusing on increasing the waste polyethylene terephthalate content. To investigate the durability in the working conditions, the water-stable composites, with good tensile and compression strengths were exposed to surfactant systems, saline aerosols, and ultraviolet radiations. The results prove that surfactant immersion improves the interfaces and the mechanical properties and a pre-conditioning step involving the dodecyltrimethylammonium bromide surfactant is recommended, prior application. The interfaces and the bulk composites were investigated by X-ray diffraction, Fourier-transform infrared, differential scanning calorimetry, contact angle measurements, scanning electron microscopy, atomic force microscopy, to identify the properties that influence the mechanical behavior and durability. The composites containing 30% of polyethylene terephthalate, obtained at 160℃ and 190℃ have a good combination of mechanical properties and durability that is enhanced by the plasticizing effect of water and surfactants. The compressive strength of the composite processed at 190℃ was 51.2 MPa and the value increased to 58.4 MPa after water immersion. The ultraviolet and saline exposure slightly diminished this effect; however, long time testing (120 h) ended up with values higher than those corresponding to the pristine composite: 55.3 MPa after ultraviolet and 57.1 MPa after saline exposure.

ACS Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. Effect of waste polyethylene terephthalate content on the durability and mechanical properties of composites with tire rubber matrix. Journal of Composite Materials 2016, 51, 357 -372.

AMA Style

Mihaela Cosnita, Cristina Cazan, Anca Duta. Effect of waste polyethylene terephthalate content on the durability and mechanical properties of composites with tire rubber matrix. Journal of Composite Materials. 2016; 51 (3):357-372.

Chicago/Turabian Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. 2016. "Effect of waste polyethylene terephthalate content on the durability and mechanical properties of composites with tire rubber matrix." Journal of Composite Materials 51, no. 3: 357-372.

Journal article
Published: 01 January 2015 in Solid State Phenomena
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The paper presents the results on accelerated corrosion/erosion tests, of Thickness Insensitive Spectrally Selective paints, based on alumina matrix infiltrated with inorganic oxide pigments used in the solar-thermal energy conversion. The mechanism of the corrosion/erosion process is presented and discussed based on the polarization Tafel curves obtained in NaCl 3.5% solution. Optical properties (solar absorptance and thermal emittance) were measured before and after the corrosion tests and the results were correlated with the sample’s morphologies and the corrosion parameters. The influence of the antireflection layer on the corrosion resistance and spectral selectivity is also discussed.

ACS Style

Cristina Bogatu; Cristina Cazan; Ileana Manciulea; Anca Duta. Corrosion Resistance in Saline Environment of Colored Based Alumina Spectrally Selective Surfaces. Solid State Phenomena 2015, 227, 103 -106.

AMA Style

Cristina Bogatu, Cristina Cazan, Ileana Manciulea, Anca Duta. Corrosion Resistance in Saline Environment of Colored Based Alumina Spectrally Selective Surfaces. Solid State Phenomena. 2015; 227 ():103-106.

Chicago/Turabian Style

Cristina Bogatu; Cristina Cazan; Ileana Manciulea; Anca Duta. 2015. "Corrosion Resistance in Saline Environment of Colored Based Alumina Spectrally Selective Surfaces." Solid State Phenomena 227, no. : 103-106.

Journal article
Published: 01 January 2015 in Solid State Phenomena
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The paper presents the results obtained when using two ketonic Mannich bases (BM1 and BM2) as corrosion inhibitors in saline (standard sea water-3.5% NaCl) for different types of steel, with various alloying elements. The corrosion experiments were performed by potentiodynamic polarization studies. Based on the polarization curves, the corrosion current density and rate were calculated. The inhibitors efficiencies were evalued and the protection mechanisms were discussed.

ACS Style

Ileana Manciulea; Cristina Bogatu; Cristina Cazan; Lucia Dumitrescu; Anca Duta. Investigation of Some Mannich Bases Corrosion Inhibitors for Carbon Steel. Solid State Phenomena 2015, 227, 63 -66.

AMA Style

Ileana Manciulea, Cristina Bogatu, Cristina Cazan, Lucia Dumitrescu, Anca Duta. Investigation of Some Mannich Bases Corrosion Inhibitors for Carbon Steel. Solid State Phenomena. 2015; 227 ():63-66.

Chicago/Turabian Style

Ileana Manciulea; Cristina Bogatu; Cristina Cazan; Lucia Dumitrescu; Anca Duta. 2015. "Investigation of Some Mannich Bases Corrosion Inhibitors for Carbon Steel." Solid State Phenomena 227, no. : 63-66.

Journal article
Published: 03 June 2014 in Journal of the American Ceramic Society
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ACS Style

Enikö György; Ángel Pérez Del Pino; Constantin Logofatu; Cristina Cazan; Anca Duta. Simultaneous Laser-Induced Reduction and Nitrogen Doping of Graphene Oxide in Titanium Oxide/Graphene Oxide Composites. Journal of the American Ceramic Society 2014, 97, 2718 -2724.

AMA Style

Enikö György, Ángel Pérez Del Pino, Constantin Logofatu, Cristina Cazan, Anca Duta. Simultaneous Laser-Induced Reduction and Nitrogen Doping of Graphene Oxide in Titanium Oxide/Graphene Oxide Composites. Journal of the American Ceramic Society. 2014; 97 (9):2718-2724.

Chicago/Turabian Style

Enikö György; Ángel Pérez Del Pino; Constantin Logofatu; Cristina Cazan; Anca Duta. 2014. "Simultaneous Laser-Induced Reduction and Nitrogen Doping of Graphene Oxide in Titanium Oxide/Graphene Oxide Composites." Journal of the American Ceramic Society 97, no. 9: 2718-2724.

Journal article
Published: 15 May 2014 in Journal of Sol-Gel Science and Technology
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Titanium oxide–active carbon composites (TiO2–AC) with photocatalytic activity were prepared by sol–gel method at low temperature. Titanium isopropoxide and active carbon were used as precursors, ethanol as solvent and HNO3 as catalyst. The composition of the studied composites was accomplished by means of X-ray diffraction, and Fourier Transform-Infrared spectrometry. The rutile crystalline phase was present in all samples. In scanning electron microscopy images the TiO2 aggregates existed either on the surface of the active carbon or heterogeneously dispersed over the whole catalyst matrix. The contact angle and point of zero charge measurements were applied to characterise the surface energy and surface charge. The photocatalytic activities of the TiO2–AC composites were evaluated in the bleaching of methyl orange and methylene blue solution from ternary mixture of methyl orange, methylene blue and Triton X100. The double divisor ratio spectra derivative method (as a multivariable calibration method) was developed to overcome the spectral overlapping, for the simultaneous analysis of ternary mixture.

ACS Style

Luminita Andronic; Alexandru Enesca; Cristina Cazan; Maria Visa. TiO2–active carbon composites for wastewater photocatalysis. Journal of Sol-Gel Science and Technology 2014, 71, 396 -405.

AMA Style

Luminita Andronic, Alexandru Enesca, Cristina Cazan, Maria Visa. TiO2–active carbon composites for wastewater photocatalysis. Journal of Sol-Gel Science and Technology. 2014; 71 (3):396-405.

Chicago/Turabian Style

Luminita Andronic; Alexandru Enesca; Cristina Cazan; Maria Visa. 2014. "TiO2–active carbon composites for wastewater photocatalysis." Journal of Sol-Gel Science and Technology 71, no. 3: 396-405.

Research article
Published: 17 February 2013 in Journal of Composite Materials
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Rubber-thermoplastic-based composites represent widely used materials due to their good mechanical properties that can be controlled according to the composition and interfaces. Considering the mechanical properties as output, recycled polyethylene terephthalate-rubber-based composites with optimized curing temperature were obtained, where rubber acts as a matrix, polyethylene terephthalate as filler and high-density polyethylene as compatibility agent. By adding another recycled material wood (sawdust), a novel composite with tailored properties was obtained via compression molding. The composites were mechanically tested in terms of compression and tensile strength. The optimized compositions were investigated by X-ray diffraction and further characterization was done to outline the interfaces contribution: surface/interface topology (atomic force microscopy) and bonding (Fourier transform infrared); contact angle measurements were developed, to evaluate the surface energy as a tool for estimating possible (thermal) degradation. Water stability was investigated and its plasticizer role was outlined. Wood sawdust addition at recycled rubber–polyethylene terephthalate–high-density polyethylene composites had a remarkable effect on the mechanical properties, recommending this composite type as structural material.

ACS Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. Interfaces and mechanical properties of recycled rubber–polyethylene terephthalate–wood composites. Journal of Composite Materials 2013, 48, 683 -694.

AMA Style

Mihaela Cosnita, Cristina Cazan, Anca Duta. Interfaces and mechanical properties of recycled rubber–polyethylene terephthalate–wood composites. Journal of Composite Materials. 2013; 48 (6):683-694.

Chicago/Turabian Style

Mihaela Cosnita; Cristina Cazan; Anca Duta. 2013. "Interfaces and mechanical properties of recycled rubber–polyethylene terephthalate–wood composites." Journal of Composite Materials 48, no. 6: 683-694.

Journal article
Published: 01 January 2013 in Environmental Engineering and Management Journal
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ACS Style

Anca Duta; Cristina Cazan; Dana Perniu; Mihaela Cosnita. POLYMERIC WASTES FROM AUTOMOTIVES AS SECOND RAW MATERIALS FOR LARGE SCALE PRODUCTS. Environmental Engineering and Management Journal 2013, 12, 1649 -1655.

AMA Style

Anca Duta, Cristina Cazan, Dana Perniu, Mihaela Cosnita. POLYMERIC WASTES FROM AUTOMOTIVES AS SECOND RAW MATERIALS FOR LARGE SCALE PRODUCTS. Environmental Engineering and Management Journal. 2013; 12 (8):1649-1655.

Chicago/Turabian Style

Anca Duta; Cristina Cazan; Dana Perniu; Mihaela Cosnita. 2013. "POLYMERIC WASTES FROM AUTOMOTIVES AS SECOND RAW MATERIALS FOR LARGE SCALE PRODUCTS." Environmental Engineering and Management Journal 12, no. 8: 1649-1655.

Journal article
Published: 30 November 2010 in Solid State Sciences
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The aim of this paper is to obtain high efficient and inexpensive spectral selective solar absorbers, for solar thermal flat plat collectors using a simple technique – spray pyrolysis deposition (SPD). To achieve maximum solar absorptance and minimum thermal emittance, the following parameters are optimized: the precursor solution concentration and composition, substrate temperature and annealing treatment. The structural and morphological properties of the films were investigated by X-ray diffraction, atomic force microscopy and contact angle measurements. The thermal emittance and solar absorptance of as-deposited films were correlated with the chemical composition, crystalline structure and morphology. The results prove that coatings with excellent spectral selective properties (normal solar absorptance of 0.92 and a normal thermal emittance of 0.03) can be obtained by SPD.

ACS Style

Elena Ienei; Luminita Isac; Cristina Cazan; Anca Duta. Characterization of Al/Al2O3/NiOx solar absorber obtained by spray pyrolysis. Solid State Sciences 2010, 12, 1894 -1897.

AMA Style

Elena Ienei, Luminita Isac, Cristina Cazan, Anca Duta. Characterization of Al/Al2O3/NiOx solar absorber obtained by spray pyrolysis. Solid State Sciences. 2010; 12 (11):1894-1897.

Chicago/Turabian Style

Elena Ienei; Luminita Isac; Cristina Cazan; Anca Duta. 2010. "Characterization of Al/Al2O3/NiOx solar absorber obtained by spray pyrolysis." Solid State Sciences 12, no. 11: 1894-1897.