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Swelling and electric-sensitive characteristics of poly-cation PVA hydrogel membrane in aqueous NaCl solution  
Swelling and electric-sensitive characteristics of poly-cation PVA hydrogel membrane in aqueous NaCl solution
资料类型: PDF文件
关键词: polycation  PVA  hydrogel  quaternization  swelling  electric-sensitive  bending  
资料大小: 629K
所属学科: 分子表征
来源: 2009先进纤维与聚合物材料国际学术会议(ICAFPM,10.21-10.24,上海)
简介:
AnovelpolycationPVA(CAPVA)hydrogelmembranecrosslinkedwithglutaraldehydehasbeenpreparedbyquaternizingpolyvinylalcohol(PVA)withglycidyltrimethylammoniumchloride(GTMAC)andusingKOHascatalystunderultrasound,anditsswellingandelectric-sensitivecharacteristicsinaqueousNaClsolutionwerestudied.Theresultsindicatedthatthewatertake-upofCAPVAhydrogelmembranedecreasedastheconcentrationofNaClsolutionincreased.Thehydrogelmembranebendedtowardtheanodeunderanon-contactdcelectricfieldinNaClaqueoussolution.Thebendingspeedanddeflectionofthehydrogelmembraneincreasedwiththeincreasingofappliedvoltage.Theelectric-sensitivecharacteristicofthehydrogelmembranewasalsoaffectedbytheelectrolyteconcentrationofexternalNaClsolution,andthereisacriticalionicstrengthof0.02atwhichitsbendingspeedandequilibriumstrainreachedthemaximumvalue.Underacyclicallyvaryingelectricfield,thehydrogelmembraneexhibitedagoodreversiblebendingbehavior.
作者: LIU Genqi, XIAO Jun, YANG Shiwen
上传时间: 2010-03-26 14:08:21
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xiaojun544    2010-06-19 23:49:13
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