Comparison of rheological behavior and spinning performance of cellulose dopes using two kinds of imidazole-based ionic liquids as solvents，2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）-中国聚合物网,论文下载

Comparison of rheological behavior and spinning performance of cellulose dopes using two kinds of imidazole-based ionic liquids as solvents

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ionic liquids cellulose fiber properties

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分子表征

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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：

Inthispaper,twokindsofimidazole-basedionicliquids,1-butyl-3-methylimidazoliumchloride([BMIM]Cl)and1-ethyl-3-methylimidazoliumacetate([EMIM]Ac),wereusedasthesolventsofcellulose.Thedissolvingcharacteristicsofcelluloseinthesetwoionicliquidswereinvestigatedwithpolarizingmicroscope.Therheologicalbehaviorandspinningperformanceofthesetwocellulosesolutionsfrom[EMIM]Acand[BMIM]Clwereinvestigated.Theresultsshowedthatcellulosehadlowerdissolutiontemperatureandfastervelocityin[EMIM]Ac,comparedwith[BMIM]Cl.Bothcellulosesolutionsbelongedtotypicalshearthinningfluids.Atthesamecondition,theapparentviscosityofthecellulose/[EMIM]Acsolutionwaslowerthanthatofcellulose/[BMIM]Clsolution,indicatingthatthecellulose/[EMIM]Acsolutioncouldbespunatalowertemperature.GPCresultsshowedthatduringthedissolutionandspinningprocess,thedegradationofcellulosein[BMIM]C1wasgreaterthanonein[EMIM]Ac.Moreover,itwasfoundthattheorientation,crystallinity,breakingtenacityandinitialmodulusofthecellulosefibreregeneratedfrom[BMIM]Clwerehigherthanthosefrom[EMIM]Ac.

作者：

CAI Tao, ZHANG Huihui, SHAO Huili, HU Xuechao

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2010-04-01 13:27:42

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