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Influence of drying method on morphology and properties of asymmetric cellulose hollow fiber membrane
Jie, XM; Cao, YM; Qin, JJ; Liu, JH; Yuan, Q; Jie XM(介兴明); Jie XM(介兴明)
关键词Cellulose Hollow Fiber Membrane Solvent Exchange Drying Hydrogen Bond
刊名JOURNAL OF MEMBRANE SCIENCE
2005-01-15
DOI10.1016/j.memsci.2004.08.007
246期:2页:157-165
收录类别SCI
文章类型Article
部门归属9
项目归属905
产权排名1;1
WOS标题词Science & Technology ; Technology ; Physical Sciences
类目[WOS]Engineering, Chemical ; Polymer Science
研究领域[WOS]Engineering ; Polymer Science
关键词[WOS]METHYLMORPHOLINE-N-OXIDE ; ACETATE MEMBRANES ; ORGANIC-SOLVENTS ; GAS PERMEATION ; SEPARATION ; PERVAPORATION ; HEMODIALYSIS ; ACETYLATION ; PERFORMANCE ; MIXTURES
英文摘要Using a dry/wet spinning process, asymmetric cellulose hollow fiber membranes (CHFM) were prepared from a dope composed of cellulose/N-methylmorpholine-N-oxide/water. The formation mechanism for the finger-like macrovoids at the inner portion of as-spun fibers was explained. Naturally drying and three solvent exchange drying methods were tried to investigate their influence on morphology and properties of CHFM. It was found that the ethanol-hexane exchange drying was an appropriate method to minimize morphology change of the as-spun CHFM, whereas the naturally drying caused the greatest shrinkage of the fibers that made the porous membrane become dense. The result, CHFM from ethanol-hexane exchange drying performed the highest gas permeation rate but gas permeation of the naturally dried membrane could not be detectable. The resultant CHFM from the ethanol-hexane exchange drying also showed acceptable, mechanical properties, thus it was proposed to be an appropriate method for gas separation purpose. The experimental results supported the proposed drying mechanism of CHFM. The free water would evaporate or be replaced by a solvent that subsequently would evaporate but the bonded water would remain in the membrane. What dominated the changes of membrane morphology during drying should be. the molecular affinities of cellulose-water, water-solvent and solvent-solvent. (C) 2004 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000226346100005
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81481
专题中国科学院大连化学物理研究所
通讯作者Jie XM(介兴明); Jie XM(介兴明)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Environm Engn, Dalian 116023, Peoples R China
2.Nanyang Technol Univ, Innovat Ctr, Environm Technol Inst, Singapore 637723, Singapore
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Jie, XM,Cao, YM,Qin, JJ,et al. Influence of drying method on morphology and properties of asymmetric cellulose hollow fiber membrane[J]. JOURNAL OF MEMBRANE SCIENCE,2005,246(2):157-165.
APA Jie, XM.,Cao, YM.,Qin, JJ.,Liu, JH.,Yuan, Q.,...&介兴明.(2005).Influence of drying method on morphology and properties of asymmetric cellulose hollow fiber membrane.JOURNAL OF MEMBRANE SCIENCE,246(2),157-165.
MLA Jie, XM,et al."Influence of drying method on morphology and properties of asymmetric cellulose hollow fiber membrane".JOURNAL OF MEMBRANE SCIENCE 246.2(2005):157-165.
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