摘要
利用等离子体诱导填孔接枝聚合法将聚 (N 异丙基丙烯酰胺 ) (PNIPAM)接枝聚合在聚偏氟乙烯(PVDF)微孔膜上制备了一系列具有较宽接枝率范围的温度感应式开关膜 ,系统地研究了接枝率对膜的温度感应开关特性的影响 .结果表明 ,开关膜的接枝率对膜的过滤通量、温度感应开关系数和膜孔径感温变化倍数都有十分重要的影响 .接枝率在小于等于 2 81%时 ,温度感应开关系数和膜孔径感温变化倍数均随接枝率增加而增加 ;而对于接枝率大于等于 6 38%的膜 ,膜开关系数和膜孔径感温变化倍数总是趋近于 1,膜不具备温度感应开关特性 .为了获得预期的开关性能 。
A series of thermo-responsive gating membranes, with a wide range of grafting yields, were prepared by grafting poly(N-isopropylacrylamide)(PNIPAM) onto porous polyvinylidene fluoride (PVDF) membrane substrates with a plasma-induced pore-filling polymerization method. The effect of grafting yield on gating characteristics of thermo-responsive gating membranes was investigated systematically. The results showed that the grafting yield heavily affected water flux,responsiveness coefficient and thermo-responsi...
基金
国家自然科学基金 (No 2 0 2 0 60 19)
教育部跨世纪优秀人才培养计划基金(教技函 [2 0 0 2 ] 48号)资助项目~~
关键词
温度感应式开关膜
接枝率
开关特性
感应特性
智能开关
thermo-responsive
gating membrane
grafting yield
gating characteristics
permeability
