Synthesis and Characterization of Poly(vinyl alcohol)/Poly(vinyl pyrrolidone)-Iodine Nanofibers with Poloxamer 188 and Chitosan

Aytimur, Arda; Koçyığıt, Serhat; Uslu, İbrahım

doi:10.1080/03602559.2012.762662

Cited by 30 publications

(15 citation statements)

References 53 publications

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“…This was due to the strong hydrogen-bonding interactions between the OH groups of PVA and the carbonyl groups in PVP; this led to an orientation of the macromolecular chain of the blend. 26 The XRD pattern of 10 wt % sericin/PVP/PVP composite showed a sharp diffraction peak at a 2h of 27.38, and we also observed that the peak at a 2h of 47.88 was absent. However, when the concentration of sericin particles was 15 wt %, the intensity of the crystalline peak at a 2h of 27.38 decreased, and the amorphous region become more prominent at a 2h of 20.68.…”

Section: Ftir Characterizationmentioning

confidence: 73%

Preparation, characterization, electrical and antibacterial properties of sericin/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composites

Ramesan

Athira

Jayakrishnan

et al. 2016

J of Applied Polymer Sci

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In this study, we focused on the fabrication of poly(vinyl alcohol) (PVA)/poly(vinyl pyrrolidone) (PVP)/sericin composites via a simple solution-blending method. The composites were characterized by Fourier transform infrared (FTIR) spectroscopy, UV spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry, thermogravimetric analysis (TGA), and measurements of the conductivity, tensile strength, and antibacterial activity against Staphylococcus aureus. The results of FTIR and UV spectroscopy implied the occurrence of hydrogen bonding between sericin and the PVA/PVP blend. The structure and morphology, studied by XRD and SEM, revealed that the sericin particles were well dispersed and arranged in an orderly fashion in the blend. The glass-transition temperature (T g ) of the composite was higher than that of the pure blend, and the T g value shifted toward higher temperatures when the volume fraction of sericin increased. TGA indicated that sericin retarded the thermal degradation; this depended on the filler concentration. The mechanical and electrical properties, such as the tensile strength, alternating-current electrical conductivity, dielectric constant, and dielectric loss of the composites, were higher than those of the pure blend, and these properties were enhanced when the concentration of sericin was increased up to 10 wt % filler content, whereas the elongation at break of the composite decreased with the addition of sericin particles. The antibacterial properties of the composite showed that sericin had a significant inhibitory effect against S.

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Section: Ftir Characterizationmentioning

confidence: 73%

Preparation, characterization, electrical and antibacterial properties of sericin/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composites

Ramesan

Athira

Jayakrishnan

et al. 2016

J of Applied Polymer Sci

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“…[1][2][3][4][5][6] . Polyvinyl alcohol (PVA) hydrogels is providing a good host matrix for the embedding of metal nanoparticles [7,8] .…”

Section: Introductionmentioning

confidence: 98%

Nano-Ag Doping Induced Changes in the Optical Behavior and Thermal Stability of Acrylic Acid-Grafted Poly Vinyl Alcohol Copolymer Films

Alshangiti

Madani

2014

Polymer-Plastics Technology and Engineering

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Metal-polymer nanocomposites have been prepared from an aqueous solution of polyvinyl alcohol/acrylic acid (PVA/AAc) and silver nitrate (AgNO 3 ). The functionalized PVA/AAc was copolymerized and cross-linked using electron beam irradiation. The prepared nanocomposites were characterized by FTIR, TEM and TGA. The average grain size is in the range of 15-44 nm, depending on Ag concentration. The thermal stability was found to increase and the optical band gap decreased with the increase of dopant concentration. The real and imaginary parts of the dielectric constant, optical conductivity, volume energy loss (VELF) and surface energy loss (SELF) of the films were also determined.

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“…Variables that have been explored include polymer solubility [9][10][11], solvent polarity [2], concentration of polymer solution [3,7,12,13], and spinning parameters such as applied voltage, tip-to-collector distance (working distance), and flow rate [2,7,8]. Various results have been reported such as none of the aforementioned parameters making a difference to fiber diameter [7] to increased voltage increasing the fiber diameter and decreased voltage resulting in beading [14].…”

Section: Introductionmentioning

confidence: 99%

“…Electrospinning is the method of fiber extrusion from a needle tip on to a grounded plate via an electrostatic gradient. It differs from conventional extrusion methods since the fiber diameters that can be achieved are of submicron scale, which bestow larger surface area that allow for efficient surface functionality and high mechanical stability [1][2][3]. Nano-scale fibers yielded from electrospinning resemble that of the natural extra-cellular matrix [1,4] and are therefore of great interest for application in tissue engineering [5,6].…”

Section: Introductionmentioning

confidence: 99%

Controlling Fiber Morphology and Scaffold Design for Treatment of Dry Age-Related Macular Degeneration

Haneef

Downes

2014

International Journal of Polymeric Materials and Polymeric Biom

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Polystyrene (PS), poly(ethylene terephthalate) (PET), and polyurethane (PU) were electrospun in various solvents, to ascertain the ideal conditions for reproducible scaffold production, in order to develop a synthetic Bruch's membrane. Effects of different environmental factors under laboratory conditions and controlled conditions, with and without 1% NaCl, were investigated. For PS, environmental conditions were more important than NaCl addition in fiber diameter reduction; however, NaCl addition showed reduced fiber size variation. For PET, reduction in fiber diameter on addition of NaCl compared to controlled environmental conditions was observed. Fiber size variation for PET was unaffected by NaCl addition or controlled conditions.

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Synthesis and Characterization of Poly(vinyl alcohol)/Poly(vinyl pyrrolidone)-Iodine Nanofibers with Poloxamer 188 and Chitosan

Cited by 30 publications

References 53 publications

Preparation, characterization, electrical and antibacterial properties of sericin/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composites

Preparation, characterization, electrical and antibacterial properties of sericin/poly(vinyl alcohol)/poly(vinyl pyrrolidone) composites

Nano-Ag Doping Induced Changes in the Optical Behavior and Thermal Stability of Acrylic Acid-Grafted Poly Vinyl Alcohol Copolymer Films

Controlling Fiber Morphology and Scaffold Design for Treatment of Dry Age-Related Macular Degeneration

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