Preparation and Structure Morphology of Poly(vinyl alcohol)/Silica Hybrid Materials Membranes Based on Electrospun Fibers

Abstract

Abstract:

The spin solutions of poly(vinyl alcohol)/silica hybrid materials with different silica contents were prepared by sol-gel method, then fiber membranes were obtained by electrospinning. XRD result indicated that the degree of crystallinity of hybrid electrospun fiber membranes declined comparing with pure PVA electrospun fiber membrane. FTIR showed that hydroxyl in PVA condensed with hydroxyl of hydrolyzing tetraethoxysilane, the fiber material with a network configuration existed. SEM revealed that when PVA/SiO₂mass ratio was 4∶1, the fibers smoothed and uniformed. With increasing of silica content, fiber diameter became fine and spindly beads increased. The fiber diameter became fine and round beads increased after adding electrolyte NaCl and MgCl₂. The forming mechanism of the fiber structure morphology was analyzed theoretically.

Key words: Poly(vinyl alcohol)/silica; Sol-gel method; Hybrid; Electrospinning, Poly(vinyl alcohol)/silica, Sol-gel method, Hybrid, Electrospinning

CLC Number:

O631

TrendMD:

SHI Tie-Jun, ZHOU Yu-Bo, LIAO Ruo-Gu, WANG Hua-Lin. Preparation and Structure Morphology of Poly(vinyl alcohol)/Silica Hybrid Materials Membranes Based on Electrospun Fibers[J]. Chem. J. Chinese Universities, 2005, 26(12): 2373.

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Preparation and Structure Morphology of Poly(vinyl alcohol)/Silica Hybrid Materials Membranes Based on Electrospun Fibers

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