Preparation of Poly(Vinylidene Fluoride)/Silica Composite Nanofiber by Electrospinning Technique

Abstract

A composite nanofiber containing poly (vinylidene fluoride) (PVDF) and silica (SiO2) were prepared by electrospinning of their mixtrues.The various amount of SiO2 nanoparticle was add with 15 wt.% PVDF solution in mixed solvent of N,N-dimethylacetamine (DMAc) : acetone at a ratio of 4:6 with the applied voltage of 8 kV, tip to collector distance of 10 cm and flow rate of 1 ml/hr. The morphology of the PVDF/SiO2 membranes was investigated by scanning electron microscope (SEM). The effect of SiO2 concentration on the morphology of the composite membranes were discussed. Crystallinity of the composite membranes was investigated by differential scanning calorimetry (DSC). It was found that SiO2 concentration have significant influence on the morphology and crystallinity of PVDF/SiO2 membranes.