Improvement of Morphology, Structure, and Thermal Properties of Electrospun PVA/RSF Fiber Mats by SiO₂

Abstract:

Poly(viny1 alcohol) (PVA)/regenerated silk fibroin (RSF)/silicon dioxide (SiO₂) fiber mats were prepared by electrospinning of composite solutions. Fiber morphology was observed under a scanning electron microscope and effects addition of SiO₂ was evaluated. Results showed that the obtained fibers exhibited a smooth outer surface, and the continuity was improved because of the different solution conductivity, solution viscosity and compatibility of PVA and RSF by the addition of 1.0 wt. % SiO₂. It was found that both Si-O-C linkage and hydrogen bonding interactions were existed among SiO₂, PVA, and RSF by FTIR spectroscopy. The addition of SiO₂ also resulted in the decrease of crystallinity and increase of thermal properties of electrospun fibers, which were suggested as a result of enhanced compatibility and physical properties of PVA and RSF composite.

• Periodical: Applied Mechanics and Materials (Volumes 184-185)
• Pages: 1017-1020
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.184-185.1017
• Online since: June 2012
• Authors: Yan Hua Liu, Li Xing Dai
• Keywords: Electro-Spinning, Morpholoy, Poly(vinyl alcohol), Regenerated Silk Fibroin, SiO₂

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