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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)
KeywordCellulose Hollow Fiber Membrane Solvent Exchange Drying Hydrogen Bond
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2005-01-15
DOI10.1016/j.memsci.2004.08.007
Volume246Issue:2Pages:157-165
Indexed BySCI
SubtypeArticle
Department9
Funding Project905
Contribution Rank1;1
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordMETHYLMORPHOLINE-N-OXIDE ; ACETATE MEMBRANES ; ORGANIC-SOLVENTS ; GAS PERMEATION ; SEPARATION ; PERVAPORATION ; HEMODIALYSIS ; ACETYLATION ; PERFORMANCE ; MIXTURES
AbstractUsing 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.
Language英语
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WOS IDWOS:000226346100005
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/81481
Collection中国科学院大连化学物理研究所
Corresponding AuthorJie XM(介兴明); Jie XM(介兴明)
Affiliation1.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
Recommended Citation
GB/T 7714
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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