Imparting thermal stability to fibres based on polyvinyl alcohol

Vol'f, L. A.; Kirilenko, Yu. K.; Urban, Zeljko; Danilova, E. Ya.; Bukalova, O. V.; Kudryavtsev, G. I.

doi:10.1007/bf00546163

Cited by 5 publications

(1 citation statement)

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“…Stabilization of the membranes was performed by heat treatment at 150°. Previous studies showed that PVA fibers are stable at this temperature, whereas the phosphonic acids of PVPA do not self‐condense at 150°C and display high thermal stability up to 300°C as a copolymer . Discoloration was observed after heat treatment, and it was noted that the intensity of color change increased with higher concentrations of PVPA added.…”

Section: Resultsmentioning

confidence: 99%

Utilization of PVPA and its effect on the material properties and biocompatibility of PVA electrospun membrane

Franco

Sadiasa

Lee

2013

Polymers for Advanced Techs

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This study aims to investigate on the effect of the addition of polyvinylphosphonic acid (PVPA) on the material properties and biocompatibility of a polyvinyl alcohol (PVA) polymer tissue engineering scaffold fabricated by electrospinning process. Stabilization of the membranes was carried out by heat application. Fourier transform infrared spectroscopy confirmed the presence of PO bonds and P–OH bonds and increase in the atomic percentage of phosphorus in Energy Dispersive Spectroscopy (EDS) indicated successful incorporation of PVPA to the PVA. Scanning electron microscope fiber morphology and microstructure showed that addition of PVPA reduced the average fiber diameter of the scaffold. After 1 hr of phosphate buffered saline immersion, scaffolds were observed to swell to almost 200% of their original weight. Increased tensile strength was observed at 0.1% PVPA addition but reduced values were observed when the concentration was greater than 0.1%. Cytocompatibility was examined with M3CT3‐E1 preosteoblast cells through cell viability after exposure to extract solutions and Live/Dead cell staining. Cell proliferation was quantified by MTT assay; cell adhesion was visualized by scanning electron microscope and confocal microscopy images. Bone regeneration was also observed and quantified using histomorphometric analysis and histological staining methods after implantation in rat calvarium for 4 weeks. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 99%

Utilization of PVPA and its effect on the material properties and biocompatibility of PVA electrospun membrane

Franco

Sadiasa

Lee

2013

Polymers for Advanced Techs

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Physical stabilisation of electrospun poly(vinyl alcohol) nanofibres: comparative study on methanol and heat-based crosslinking

2014

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Methanol crosslinking and heat-treatment methods for physical crosslinking of electrospun poly(vinyl alcohol) (PVA) nanofibres were investigated to assess their stability in water. For this purpose, PVAs with low and high molecular weights were selected. Morphology of the crosslinked membranes was characterised by scanning electron microscopy. Crystallinity of the resultant crosslinked fibres were analysed by FT-IR and differential scanning calorimetry. It has been shown that physical crosslinking increases the crystallinity of the fibres. High molecular weight PVA nanofibres showed better stability and better preservation of nanofibrous structure. Stability of the crosslinked membranes was also tested by immersion into water at room temperature and boiling water. Combined methanol and heat treatments at different temperatures and exposure periods were also investigated. Treatment at 180°C HMW PVA nanofibres for longer durations exhibited best results in terms of water stability, although it exhibited somewhat lower swelling ratios as compared to those subjected to only methanol treatment.

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A Novel Approach for Facile Synthesis of Biocompatible PVA-Coated PLA Nanofibers as Composite Membrane Scaffolds for Enhanced Osteoblast Proliferation

Abdal‐hay

Makhlouf²,

Vanegas

2015

Handbook of Nanoceramic and Nanocomposite Coatings and Materials

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Imparting thermal stability to fibres based on polyvinyl alcohol

Cited by 5 publications

References 0 publications

Utilization of PVPA and its effect on the material properties and biocompatibility of PVA electrospun membrane

Utilization of PVPA and its effect on the material properties and biocompatibility of PVA electrospun membrane

Physical stabilisation of electrospun poly(vinyl alcohol) nanofibres: comparative study on methanol and heat-based crosslinking

A Novel Approach for Facile Synthesis of Biocompatible PVA-Coated PLA Nanofibers as Composite Membrane Scaffolds for Enhanced Osteoblast Proliferation

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