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Temperature-controlled responsive Poly(vinylidene fluoride)PVDF membranes by grafting poly(N-isopro -pylacrylamide) on them
Temperature-controlled responsive Poly(vinylidene fluoride)PVDF membranes by grafting poly(N-isopro -pylacrylamide) on them
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通用高分子材料
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1. Introduction
Poly(vinylidene fluoride) (PVDF), owning good heat, corrosion and solvent resistance[l], be
prepared into flat sheet membranes and hollow fiber membranes [2], which are widely applied to
various fields such as water purification, organic solvent refining and membrane distillation. So
PVDF membranes, as a kind of functional material, their preferential separation process is of high
efficiency, low energy consumption, easy manipulation and no secondary pollution. However, PVDF
is a hydrophobic polymer [3], so PVDF membranes are vulnerable to the pollution of some
hydrophobic substance especially organics, which brings about decreasing their permeability,
separation performance and service life.
