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Preparation of Polysulfone Membranes using Ionic Liquid [C16mim][SCN] as a pore-former and plasticizer

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關鍵詞：

Ionic liquid synthesis Polysulfone membrane Pore-forming Preparation

資料大小：

967K

所屬學科：

分子表征

來源：

2009高分子材料先進制造業（青島）國際論壇（8.19-8.21，青島）

簡介：

Polysulfone(PSf)membraneswerepreparedbythewet-phase-inversionusing1-hexadecyl-3-methylimidazoliumthiocyanate[C16mim][SCN]asannewadditive.Scanningelectronmicroscopewasutilizedtovisualizecross-sectionsofthemembranestogainmorebetterunderstandingtheinfluenceof[C16mim][SCN]onthepore-forming.Moreover,Membrane-formingmechanismusingionicliquidasaporeformerwasalsodiscussed.Theresultsshowedthationicliquid[C16mim][SCN]hadrestrainedthedemixingofthecastingsolutionsandhastheabilityofthepore-forming,higherthanthoseofitsanaloguesofPEG400.Withincreaseofconcentrationofionicliquid[C16mim][SCN]incastingsolutions,thestructuresofthemembraneschangedfromasymmetricfingerporestothespongy-finger-macrovoidstructureofthepores.ComparedwithPEG400asapore-former,[C16mim][SCN]hasthepore-formingabilitytothemembraneatlowerconcentrationof[C16mim][SCN]inthecastingsolution.Especially,atthe4:76ratioof[C16mim][SCN]/NMP,thepreparedmembranehastheasymmetricfinger-poresstructure,withthe2~6μmporesclosetosurfacelayerandthe10~24μmporeforitssublayer.ItsretentionrateofPEG10000andsolutionfluxare97.1%and48.7L·h-1·m-2.Meanwhile,ionicliquidcanbeaplasticizer,accordingthethermalpropertiesofthemembranes.

作者：

ZHAO Yameia, HU Xiaolingb, YU Jinyangc Guan Ping

上傳時間：

2009-11-06 11:30:54

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