In this study, the PVDF (Poly (vinylidene fluoride))/silica hybrid composites are prepared by mixing PVDF and silica, which was synthesized by sol—gel process. We changed R (the molar ratio of water/TEOS) during the sol—gel process, and made a film. The crystallinity of PVDF in the hybrid is measured by DSC (Differential scanning calorimetry), and the morphologies are observed with SEM pictures. We found that the silica particles could be well dispersed in PVDF, and R-value influenced the particle size and the crystallinity of PVDF. The concentration of TEOS also influenced the particle size and shape of silica. Higher concentration of TEOS made the silica particles have round shape and also lowered the crystallinity of PVDF.
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2.
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3.
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4.
Du Pasquier, A., Warren, P.C., Culver, D., Gozdz, A.S., Amatucci, G.G. and Tarascon, J.-M. ( 1999). Plastic PVDF-HFP Electrolyte Laminates Prepared by a Phase-inversion Process, In: 12th Solid State Ionics Conference, Halkidiki, Greece.
5.
Kim, J.W. , Cho, W.J. and Ha , C.S. (2002). Morphology, Crystalline Structure, and Properties of Poly(vinylidene fluoride)/Silica Hybrid Composites , J. Polym. Sci.: Part B: Polym. Phys. , 40: 19-30.
6.
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7.
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8.
Huang, R.Y.M. , Pal, R. and Moon, G.Y. (2000). Pervaporation Dehydration of Aqueous Ethanol and Isopropanol Mixtures Through Alginate/Chitosan Twoply Composite Membranes Supported by Poly(Vinylidene Fluoride) Porous Membrane , J. Membr. Sci., 167: 275-289.
9.
Nunes, S.P. and Peinemann, K.V. ( 1992). Ultrafiltration Membranes from PVDF/PMMA Blends, J. Membr. Sci., 73: 25-35.
