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Industrially scalable fabrication of Chitosan (CS)/Nylon-6 (N) based nanofiber membrane was achieved using novel Solution Blowing technique with 40% Nylon-6 being replaced with Chitosan. The membrane was used as an efficient, reusable adsorbent of heavy metal (Cu2+) from water encompassing a wide range of metal ion concentrations, namely- 3–100 mg/L. At pH- 4 the adsorption was most favorable, and the maximum capacity was found to be as high as 240 mg/g owing to highly available active amine (-N¨H2) groups. At lower concentration, the adsorption profile could be matched with both Langmuir and Freundlich adsorption isotherms. However, both isotherms failed at higher concentration regime, hypothesizing possible access to sub-surface availability of active sites, which is otherwise not reported for fiber-based adsorbents as per best of knowledge of authors. Large scale (4L) demonstration with such adsorbent, with 90% metal ion removal efficiency, exhibits the potential of the membrane in practical applications. The membrane could be reused up to 8 times where the leachate can be used for metal extraction.
Ashish Kakoria; Suman Sinha-Ray; Sumit Sinha-Ray. Industrially scalable Chitosan/Nylon-6 (CS/N) nanofiber-based reusable adsorbent for efficient removal of heavy metal from water. Polymer 2020, 213, 123333 .
AMA StyleAshish Kakoria, Suman Sinha-Ray, Sumit Sinha-Ray. Industrially scalable Chitosan/Nylon-6 (CS/N) nanofiber-based reusable adsorbent for efficient removal of heavy metal from water. Polymer. 2020; 213 ():123333.
Chicago/Turabian StyleAshish Kakoria; Suman Sinha-Ray; Sumit Sinha-Ray. 2020. "Industrially scalable Chitosan/Nylon-6 (CS/N) nanofiber-based reusable adsorbent for efficient removal of heavy metal from water." Polymer 213, no. : 123333.
Cellulose is one of the most abundant, sustainable and renewable materials on Earth. Accordingly, its utilization in different forms on different scales is in focus. Cellulose-based nanomaterials are considered to be one of the most exciting nanomaterials. Preparation of cellulose-based materials necessitates formation of cellulose-based solutions using environmentally hazardous solvents, which stems from the chemical nature of cellulose. In this work, an experimental and theoretical study of cellulose dissolution is described. As a model system, dissolution of cellulose in Schweizer's reagent is studied experimentally and theoretically as a model non-derivatizing method, elucidating and describing the physico-chemical aspects of the process. Dissolution of individual fibers pulled off banana woolery and cotton linters is studied experimentally. It is observed that a fiber can begin to swell before dissolution, even though it does not happen always. Then, the cross-sectional fiber size diminishes linearly in time, allowing direct measurement of the rate of cellulose dissolution. The theoretical model developed here links the rate of dissolution with the number of hydrogen bonds associated with hydroxyls on the surface of cellulose molecule required to be broken by chelating copper ions. This number is shown to be 1.28 × 1010–4.05 × 1010 cm−2, indicating that nanocellulose fibrils of length of 100–1000 nm are chipped off from cellulose during dissolution process. In concert with the dissolution rate, osmotically- driven flow of solvent towards the dissolving cellulose surface was also shown.
Yasmin J. Dias; Alexander Kolbasov; Suman Sinha-Ray; Behnam Pourdeyhimi; Alexander L. Yarin. Theoretical and experimental study of dissolution mechanism of cellulose. Journal of Molecular Liquids 2020, 312, 113450 .
AMA StyleYasmin J. Dias, Alexander Kolbasov, Suman Sinha-Ray, Behnam Pourdeyhimi, Alexander L. Yarin. Theoretical and experimental study of dissolution mechanism of cellulose. Journal of Molecular Liquids. 2020; 312 ():113450.
Chicago/Turabian StyleYasmin J. Dias; Alexander Kolbasov; Suman Sinha-Ray; Behnam Pourdeyhimi; Alexander L. Yarin. 2020. "Theoretical and experimental study of dissolution mechanism of cellulose." Journal of Molecular Liquids 312, no. : 113450.
With the per capita growth of energy demand, there is a significant need for alternative and sustainable energy resources. Efficient electrochemical catalysis will play an important role in sustaining that need, and nanomaterials will play a crucial role, owing to their high surface area to volume ratio. Electrospun nanofiber is one of the most promising alternatives for producing such nanostructures. A section of key nano-electrocatalysts comprise of transition metals (TMs) and their derivatives, like oxides, sulfides, phosphides and carbides, etc., as well as their 1D composites with carbonaceous elements, like carbon nanotubes (CNTs) and carbon nanofiber (CNF), to utilize the fruits of TMs’ electronic structure, their inherent catalytic capability and the carbon counterparts’ stability, and electrical conductivity. In this work, we will discuss about such TM derivatives, mostly TM-based ceramics, grown on the CNF substrates via electrospinning. We will discuss about manufacturing methods, and their electrochemical catalysis performances in regards to energy conversion processes, dealing mostly with water splitting, the metal–air battery fuel cell, etc. This review will help to understand the recent evolution, challenges and future scopes related to electrospun transition metal derivative-based CNFs as electrocatalysts.
Sahil Verma; Sumit Sinha-Ray; Suman Sinha-Ray. Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review. Polymers 2020, 12, 238 .
AMA StyleSahil Verma, Sumit Sinha-Ray, Suman Sinha-Ray. Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review. Polymers. 2020; 12 (1):238.
Chicago/Turabian StyleSahil Verma; Sumit Sinha-Ray; Suman Sinha-Ray. 2020. "Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review." Polymers 12, no. 1: 238.
Christopher Staszel; Suman Sinha-Ray; Alexander L. Yarin. Forced vibration of a heated wire subjected to nucleate boiling. International Journal of Heat and Mass Transfer 2019, 135, 44 -51.
AMA StyleChristopher Staszel, Suman Sinha-Ray, Alexander L. Yarin. Forced vibration of a heated wire subjected to nucleate boiling. International Journal of Heat and Mass Transfer. 2019; 135 ():44-51.
Chicago/Turabian StyleChristopher Staszel; Suman Sinha-Ray; Alexander L. Yarin. 2019. "Forced vibration of a heated wire subjected to nucleate boiling." International Journal of Heat and Mass Transfer 135, no. : 44-51.
Lightweight laminate composite sandwich-like materials are one of the most used composite materials. When a laminate composite is punched normally to the surface, the outer skin layer plays a protective role, which is studied in the present work by elucidating the corresponding stress distribution in the core. First, a theoretical framework is developed to predict the stress distribution in the core corresponding to different mechanical properties of the skin. Thus, the location of the highest stress is predicted and a potential failure domain in the core of the laminate composite is established. The theory is verified by novel photoelastic experiments developed and conducted in this work. In addition, a micromechanical model of behavior of paper filaments under compression is proposed and verified experimentally. Based on this model, a novel method of measuring Young's modulus and Poisson's ratio of compressed paper is proposed and demonstrated.
Alexander Kolbasov; Suman Sinha-Ray; Alexander L. Yarin. Theoretical and experimental study of punched laminate composites protected by outer paper layer. Journal of the Mechanics and Physics of Solids 2019, 128, 117 -136.
AMA StyleAlexander Kolbasov, Suman Sinha-Ray, Alexander L. Yarin. Theoretical and experimental study of punched laminate composites protected by outer paper layer. Journal of the Mechanics and Physics of Solids. 2019; 128 ():117-136.
Chicago/Turabian StyleAlexander Kolbasov; Suman Sinha-Ray; Alexander L. Yarin. 2019. "Theoretical and experimental study of punched laminate composites protected by outer paper layer." Journal of the Mechanics and Physics of Solids 128, no. : 117-136.
D. Dannessa; S. Sinha-Ray; S. Jun; A.L. Yarin. Jets of three-phase power-law fluids and foam jet mixing in gypsum slurry. Construction and Building Materials 2018, 166, 922 -944.
AMA StyleD. Dannessa, S. Sinha-Ray, S. Jun, A.L. Yarin. Jets of three-phase power-law fluids and foam jet mixing in gypsum slurry. Construction and Building Materials. 2018; 166 ():922-944.
Chicago/Turabian StyleD. Dannessa; S. Sinha-Ray; S. Jun; A.L. Yarin. 2018. "Jets of three-phase power-law fluids and foam jet mixing in gypsum slurry." Construction and Building Materials 166, no. : 922-944.
Polymer is one of the most ubiquitous materials in human civilization. The ease of processability and lower cost of manufacturing make it one of the most attractive families of materials. Spraying is one of the most studied methods of processing polymeric materials. In this chapter, a brief overview of different spray processes will be provided. Different conventional spray methods, namely thermal spray, electrospray, spray drying, etc., will be discussed. Apart from the conventional spray methods, some unique methods of spraying, namely ultrasonic spraying, electricity-assisted subsonic and supersonic blowing, solvent-mediated emulsion method, etc., will also be discussed. It should be mentioned that processed polymers are used in various shapes and sizes. For the sake of brevity and clarity, the overall discussion will be limited to three different form of polymers—planar polymer film, polymer particles (from micro to nano), and polymer fibers (from micro to nano). The discussion will be extended to elucidate some of the uses of such processed polymers. Finally, some of the challenges with processing polymers will be elucidated.
Suman Sinha-Ray. Spray in Polymer Processing. Applications of Paleoenvironmental Techniques in Estuarine Studies 2017, 31 -54.
AMA StyleSuman Sinha-Ray. Spray in Polymer Processing. Applications of Paleoenvironmental Techniques in Estuarine Studies. 2017; ():31-54.
Chicago/Turabian StyleSuman Sinha-Ray. 2017. "Spray in Polymer Processing." Applications of Paleoenvironmental Techniques in Estuarine Studies , no. : 31-54.
Gypsum board assemblies are important in preventing spread of flame and hot smoke, keeping escape routes available, and extending evacuation time. In general, heavier assemblies are expected to provide a higher degree of fire resistance, while low density board can reduce transportation and labor costs. The focus of this paper is to identify key model parameters that affect performance under fire conditions to enable design of lower weight board assemblies without compromising fire performance. A mathematical model was developed to estimate the thermal response of full scale 3-D gypsum wall assemblies subjected to ASTM E-119 furnace test conditions. The effect of insulation in the air cavity (including melting) was modeled. The estimated thermal response compared favorably with the measured experimental furnace test data. It was found that lots of factors were positively correlated with failure time. Among them, the board thickness, the activation energy of di-hydrate gypsum and hemi-hydrate gypsum had the most significant influence. When these factors were increased by 5% respectively, failure time was extended by 8.06%, 7.81% and 11.84% accordingly. Some factors were negatively correlated with failure time, such as the emissivity of anhydrous gypsum, the thermal conductivity and melt conductivity of insulation. Emissivity of the hemi-hydrate gypsum did not affect the failure time obviously.
Yanqiu Chen; Naveen Punati; Suman Sinha Ray; Lizhong Yang; Kuldeep Prasad. Thermal failure time of non-loadbearing gypsum board assemblies in standard furnace tests. Applied Thermal Engineering 2017, 127, 1285 -1292.
AMA StyleYanqiu Chen, Naveen Punati, Suman Sinha Ray, Lizhong Yang, Kuldeep Prasad. Thermal failure time of non-loadbearing gypsum board assemblies in standard furnace tests. Applied Thermal Engineering. 2017; 127 ():1285-1292.
Chicago/Turabian StyleYanqiu Chen; Naveen Punati; Suman Sinha Ray; Lizhong Yang; Kuldeep Prasad. 2017. "Thermal failure time of non-loadbearing gypsum board assemblies in standard furnace tests." Applied Thermal Engineering 127, no. : 1285-1292.
Transparent conducting electrodes attract attention in relation to solar cells, touch panels, displays, e-readers, and transparent heaters. In many cases, rarefied metal nets with optical transmittance of ≈90% and with minimal sheet resistance are sought after. Here, a mesh of conducting polymer nanofibers is developed as a transparent conducting electrode. A sheet resistance of 8.4 kΩ sq−1 with 84% optical transmittance is achieved with polyethylene oxide/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEO/PEDOT:PSS) blended polymer nanofibers. This study also demonstrates that such nanofiber being deposited on a glass substrate can be used as a transparent film heater in relevant applications such as window heating or displays at harsh environments. Such a transparent heater is rated at 0.41 W in.−2 for 120 V. It is also capable of heating a substrate up to ≈70 °C in 4 min at 60 V from room temperature without any degeneration of nanofiber network, rendering itself as a practically useful transparent heater. The performance of the PEO/PEDOT:PSS nanofiber-coated transparent glass heater is comparable to that of the relatively expensive indium tin oxide thin-film heaters.
Sebnem Duzyer; Sumit Sinha-Ray; Suman Sinha-Ray; Alexander L. Yarin. Transparent Conducting Electrodes from Conducting Polymer Nanofibers and Their Application as Thin-Film Heaters. Macromolecular Materials and Engineering 2017, 302, 1 .
AMA StyleSebnem Duzyer, Sumit Sinha-Ray, Suman Sinha-Ray, Alexander L. Yarin. Transparent Conducting Electrodes from Conducting Polymer Nanofibers and Their Application as Thin-Film Heaters. Macromolecular Materials and Engineering. 2017; 302 (10):1.
Chicago/Turabian StyleSebnem Duzyer; Sumit Sinha-Ray; Suman Sinha-Ray; Alexander L. Yarin. 2017. "Transparent Conducting Electrodes from Conducting Polymer Nanofibers and Their Application as Thin-Film Heaters." Macromolecular Materials and Engineering 302, no. 10: 1.
A. Kolbasov; S. Sinha-Ray; A.L. Yarin; B. Pourdeyhimi. Heavy metal adsorption on solution-blown biopolymer nanofiber membranes. Journal of Membrane Science 2017, 530, 250 -263.
AMA StyleA. Kolbasov, S. Sinha-Ray, A.L. Yarin, B. Pourdeyhimi. Heavy metal adsorption on solution-blown biopolymer nanofiber membranes. Journal of Membrane Science. 2017; 530 ():250-263.
Chicago/Turabian StyleA. Kolbasov; S. Sinha-Ray; A.L. Yarin; B. Pourdeyhimi. 2017. "Heavy metal adsorption on solution-blown biopolymer nanofiber membranes." Journal of Membrane Science 530, no. : 250-263.
Here, we demonstrate that heat removed in pool boiling from a heater mimicking high-power microelectronics could be used to facilitate a swing-like motion of the heater before being finally dissipated. This swing-like motion could be beneficial for shedding a large vapor bubble that encapsulates high-power heaters in microgravity where buoyancy force is unavailable for vapor bubble removal. The swing-like motion is propelled by vapor bubble recoil, the force which exists irrespective of gravity and buoyancy. We also demonstrate that this force could be significantly enhanced by depositing on the heater surface supersonically blown polymer nanofibers with cross-sectional diameters below 100 nm. These nanofibers provide additional nucleation sites, resulting in much more frequent bubble nucleation and departure, and thus a higher overall vapor recoil force propelling the heater motion. Such nanofibers strongly adhere to the heater surface and withstand prolonged harsh pool boiling. The measured velocity of the model swing-like heater in Novec 7300 fluid is about 1 cm/s.
Sumit Sinha-Ray; Wenshuo Zhang; Barak Stoltz; Rakesh P. Sahu; Suman Sinha-Ray; Alexander L. Yarin. Swing-like pool boiling on nano-textured surfaces for microgravity applications related to cooling of high-power microelectronics. npj Microgravity 2017, 3, 9 .
AMA StyleSumit Sinha-Ray, Wenshuo Zhang, Barak Stoltz, Rakesh P. Sahu, Suman Sinha-Ray, Alexander L. Yarin. Swing-like pool boiling on nano-textured surfaces for microgravity applications related to cooling of high-power microelectronics. npj Microgravity. 2017; 3 (1):9.
Chicago/Turabian StyleSumit Sinha-Ray; Wenshuo Zhang; Barak Stoltz; Rakesh P. Sahu; Suman Sinha-Ray; Alexander L. Yarin. 2017. "Swing-like pool boiling on nano-textured surfaces for microgravity applications related to cooling of high-power microelectronics." npj Microgravity 3, no. 1: 9.
Sumit Sinha Ray; Wenshuo Zhang; Rakesh Sahu; Suman Sinha-Ray; Alexander L. Yarin. Pool boiling of Novec 7300 and DI water on nano-textured heater covered with supersonically-blown or electrospun polymer nanofibers. International Journal of Heat and Mass Transfer 2017, 106, 482 -490.
AMA StyleSumit Sinha Ray, Wenshuo Zhang, Rakesh Sahu, Suman Sinha-Ray, Alexander L. Yarin. Pool boiling of Novec 7300 and DI water on nano-textured heater covered with supersonically-blown or electrospun polymer nanofibers. International Journal of Heat and Mass Transfer. 2017; 106 ():482-490.
Chicago/Turabian StyleSumit Sinha Ray; Wenshuo Zhang; Rakesh Sahu; Suman Sinha-Ray; Alexander L. Yarin. 2017. "Pool boiling of Novec 7300 and DI water on nano-textured heater covered with supersonically-blown or electrospun polymer nanofibers." International Journal of Heat and Mass Transfer 106, no. : 482-490.
In this work, the adhesion energies of two dissimilar polymer films after thermal bonding are studied. The films were formed from the emulsions of polycaprolactone (PCL) and nylon-6 (N6) spin-coated onto metal substrates. After that, the solidified blend polymer films on the metal substrates were faced with additional PCL films on metal substrates and thermally bonded to them. The surface structure of blend films was elucidated prior to thermal bonding by staining them using Rhodamine B. The dye stained only N6 leaving PCL undyed and the exposed structure was analyzed using digital photography, which revealed the surface concentration of PCL, as well as the N6 and PCL distributions over the surfaces. It was discovered that PCL-N6 domains would remain partially mixed, influencing the adhesion energy measured.
Christopher Staszel; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. Adhesion of blended polymer films. Polymer 2017, 112, 92 -101.
AMA StyleChristopher Staszel, Suman Sinha-Ray, Alexander L. Yarin, Behnam Pourdeyhimi. Adhesion of blended polymer films. Polymer. 2017; 112 ():92-101.
Chicago/Turabian StyleChristopher Staszel; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. 2017. "Adhesion of blended polymer films." Polymer 112, no. : 92-101.
Scalable and economical manufacturing of flexible transparent conducting films (TCF) is a key barrier to widespread adoption of low‐cost flexible electronics. Here, a simple, robust, and scalable method of flexible TCF formation using supersonic kinetic spraying is demonstrated. Silver nanowire (AgNW) suspensions are sprayed at supersonic speed to produce self‐sintered films of AgNWs on flexible substrates. These films display remarkably low sheet resistance, 90%. These electrically conducting, transparent, and flexible coatings can be deposited over a 100 cm2 area in ≈30 s. Theoretical analysis reveals the underlying physical mechanism behind self‐sintering, showing that self‐sintering is enabled by the high velocity of impact in supersonic spraying.
Jong-Gun Lee; Do-Yeon Kim; Suman Sinha-Ray; Alexander L. Yarin; Mark T. Swihart; Donghwan Kim; Sam S. Yoon. Production of Flexible Transparent Conducting Films of Self-Fused Nanowires via One-Step Supersonic Spraying. Advanced Functional Materials 2016, 27, 1 .
AMA StyleJong-Gun Lee, Do-Yeon Kim, Suman Sinha-Ray, Alexander L. Yarin, Mark T. Swihart, Donghwan Kim, Sam S. Yoon. Production of Flexible Transparent Conducting Films of Self-Fused Nanowires via One-Step Supersonic Spraying. Advanced Functional Materials. 2016; 27 (1):1.
Chicago/Turabian StyleJong-Gun Lee; Do-Yeon Kim; Suman Sinha-Ray; Alexander L. Yarin; Mark T. Swihart; Donghwan Kim; Sam S. Yoon. 2016. "Production of Flexible Transparent Conducting Films of Self-Fused Nanowires via One-Step Supersonic Spraying." Advanced Functional Materials 27, no. 1: 1.
Arkaprovo Ghosal; Sumit Sinha-Ray; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. Numerical modeling and experimental study of solution-blown nonwovens formed on a rotating drum. Polymer 2016, 105, 255 -263.
AMA StyleArkaprovo Ghosal, Sumit Sinha-Ray, Suman Sinha-Ray, Alexander L. Yarin, Behnam Pourdeyhimi. Numerical modeling and experimental study of solution-blown nonwovens formed on a rotating drum. Polymer. 2016; 105 ():255-263.
Chicago/Turabian StyleArkaprovo Ghosal; Sumit Sinha-Ray; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. 2016. "Numerical modeling and experimental study of solution-blown nonwovens formed on a rotating drum." Polymer 105, no. : 255-263.
Despite being at the same time a very common and precious fluid, the rheological properties of blood have not been thoroughly investigated. In this manuscript, the rheology of swine blood is characterized. The rheology study is performed in shear flow and in uniaxial elongation. Measurements show that blood is a shear-thinning and viscoelastic fluid. The relaxation time and elongational viscosity of blood are measured. The relaxation time is found in agreement with a recent measurement by Brust et al. (2013). It is shown for the first time that the elongational viscosity can be 1000 times higher than the shear viscosity. Implications in biology and forensics are described.
Alexander Kolbasov; Patrick M. Comiskey; Rakesh Sahu; Suman Sinha-Ray; Alexander L. Yarin; Basant Sikarwar; Sungu Kim; Talukder Zaki Jubery; Daniel Attinger. Blood rheology in shear and uniaxial elongation. Rheologica Acta 2016, 55, 901 -908.
AMA StyleAlexander Kolbasov, Patrick M. Comiskey, Rakesh Sahu, Suman Sinha-Ray, Alexander L. Yarin, Basant Sikarwar, Sungu Kim, Talukder Zaki Jubery, Daniel Attinger. Blood rheology in shear and uniaxial elongation. Rheologica Acta. 2016; 55 (11-12):901-908.
Chicago/Turabian StyleAlexander Kolbasov; Patrick M. Comiskey; Rakesh Sahu; Suman Sinha-Ray; Alexander L. Yarin; Basant Sikarwar; Sungu Kim; Talukder Zaki Jubery; Daniel Attinger. 2016. "Blood rheology in shear and uniaxial elongation." Rheologica Acta 55, no. 11-12: 901-908.
Pool boiling of Novec 7300 fluid and self-rewetting water–heptanol mixtures on bare copper surface and a copper surface coated with copper-plated nanofibers is studied experimentally. The experimental data revealed a significant increase in the heat removal rate up to the critical heat flux (CHF) on the copper-plated nanofiber surfaces in comparison with bare copper surfaces. Also, the critical heat flux increases on the copper-plated nanofiber surface, albeit it is reached at a lower surface superheat in comparison with bare copper surface. Prolong boiling in water facilitates oxidation of the layer of copper-plated nanofibers, and diminishes its roughness, albeit does not affect the heat transfer rate.
Rakesh Sahu; Sumit Sinha Ray; Suman Sinha-Ray; Alexander L. Yarin. Pool boiling of Novec 7300 and self-rewetting fluids on electrically-assisted supersonically solution-blown, copper-plated nanofibers. International Journal of Heat and Mass Transfer 2016, 95, 83 -93.
AMA StyleRakesh Sahu, Sumit Sinha Ray, Suman Sinha-Ray, Alexander L. Yarin. Pool boiling of Novec 7300 and self-rewetting fluids on electrically-assisted supersonically solution-blown, copper-plated nanofibers. International Journal of Heat and Mass Transfer. 2016; 95 ():83-93.
Chicago/Turabian StyleRakesh Sahu; Sumit Sinha Ray; Suman Sinha-Ray; Alexander L. Yarin. 2016. "Pool boiling of Novec 7300 and self-rewetting fluids on electrically-assisted supersonically solution-blown, copper-plated nanofibers." International Journal of Heat and Mass Transfer 95, no. : 83-93.
Sustained controlled drug release is one of the prominent contributions for more successful treatment outcomes in the case of several diseases. However, the incorporation of hydrophilic drugs into nanofibers, a promising novel delivery system, and achieving a long-term sustained release still pose a challenging task. In this work we demonstrated a robust method of avoiding burst release of drugs and achieving a sustained drug release from 2 to 4 weeks using core–shell nanofibers with poly(methyl methacrylate) (PMMA) shell and monolithic poly(vinyl alcohol) (PVA) core or a novel type of core–shell nanofibers with blended (PVA and PMMA) core loaded with ciprofloxacin hydrochloride (CIP). It is also shown that, for core–shell nanofibers with monolithic core, drug release can be manipulated by varying flow rate of the core PVA solution, whereas for core–shell nanofibers with blended core, drug release can be manipulated by varying the ratios between PMMA and PVA in the core. During coaxial electrospinning, when the solvent from the core evaporates in concert with the solvent from the shell, the interconnected pores spanning the core and the shell are formed. The release process is found to be desorption-limited and agrees with the two-stage desorption model. Ciprofloxacin-loaded nanofiber mats developed in the present work could be potentially used as local drug delivery systems for treatment of several medical conditions, including periodontal disease and skin, bone, and joint infections.
Špela Zupančič; Sumit Sinha-Ray; Suman Sinha-Ray; Julijana Kristl; Alexander L. Yarin. Controlled Release of Ciprofloxacin from Core–Shell Nanofibers with Monolithic or Blended Core. Molecular Pharmaceutics 2016, 13, 1393 -1404.
AMA StyleŠpela Zupančič, Sumit Sinha-Ray, Suman Sinha-Ray, Julijana Kristl, Alexander L. Yarin. Controlled Release of Ciprofloxacin from Core–Shell Nanofibers with Monolithic or Blended Core. Molecular Pharmaceutics. 2016; 13 (4):1393-1404.
Chicago/Turabian StyleŠpela Zupančič; Sumit Sinha-Ray; Suman Sinha-Ray; Julijana Kristl; Alexander L. Yarin. 2016. "Controlled Release of Ciprofloxacin from Core–Shell Nanofibers with Monolithic or Blended Core." Molecular Pharmaceutics 13, no. 4: 1393-1404.
Arkaprovo Ghosal; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. Numerical prediction of the effect of uptake velocity on three-dimensional structure, porosity and permeability of meltblown nonwoven laydown. Polymer 2016, 85, 19 -27.
AMA StyleArkaprovo Ghosal, Suman Sinha-Ray, Alexander L. Yarin, Behnam Pourdeyhimi. Numerical prediction of the effect of uptake velocity on three-dimensional structure, porosity and permeability of meltblown nonwoven laydown. Polymer. 2016; 85 ():19-27.
Chicago/Turabian StyleArkaprovo Ghosal; Suman Sinha-Ray; Alexander L. Yarin; Behnam Pourdeyhimi. 2016. "Numerical prediction of the effect of uptake velocity on three-dimensional structure, porosity and permeability of meltblown nonwoven laydown." Polymer 85, no. : 19-27.
Gravitational drainage of vertical films of ionic surfactants supported on a frame with the upper and lower parts being electrodes is studied experimentally. The electric field introduces three additional physical phenomena: (i) the surface charge redistribution, which eventually changes surface elasticity, (ii) the electroosmotic flow in the diffuse layer, and (iii) pressure build-up near the electrode toward which the electroosmotic flow is directed. It is shown that stabilization of the films is possible either due to the traction imposed by the electroosmotic flow directed upward (against gravity), or due to the pressure build-up near the lower end of the frame, in cases where the electroosmotic flow is directed downward (in the gravity direction) and enters a dead end at the lower electrode.
Soumyadip Sett; Rakesh P. Sahu; Suman Sinha-Ray; Alexander L. Yarin. Experimental Investigation of Eletrokinetic Stabilization of Gravitational Drainage of Ionic Surfactants Films. Electrochimica Acta 2016, 187, 693 -703.
AMA StyleSoumyadip Sett, Rakesh P. Sahu, Suman Sinha-Ray, Alexander L. Yarin. Experimental Investigation of Eletrokinetic Stabilization of Gravitational Drainage of Ionic Surfactants Films. Electrochimica Acta. 2016; 187 ():693-703.
Chicago/Turabian StyleSoumyadip Sett; Rakesh P. Sahu; Suman Sinha-Ray; Alexander L. Yarin. 2016. "Experimental Investigation of Eletrokinetic Stabilization of Gravitational Drainage of Ionic Surfactants Films." Electrochimica Acta 187, no. : 693-703.