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题名: EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES
作者: Mao Zhiming1, 2;  Jie Xingming1;  Cao Yiming1;  Liu Dandan1;  Liu Jianhui1;  Zhou Meiqing1;  Yuan Quan1
关键词: Cellulose hollow fibre membrane ;  Coagulating bath ;  Gas separation ;  Knudson-diffusion ;  Solution-diffusion
刊名: ACTA POLYMERICA SINICA
发表日期: 2011-04-20
DOI: 10.3724/SP.J.1105.2011.10107
期: 4, 页:395-401
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: Cellulose hollow fiber membranes (CHFMs) were prepared by a new dissolving method. The influence of coagulation bath temperature on the morphology and properties such as crystallinity degree, mechanical strength and gas permeation performance of CHFM was systematically investigated. The results showed that with the increase of coagulation bath temperature, the morphology of asymmetric cellulose hollow fiber membranes would become much looser, and more large finger-like pores could be found across the section. At the same time, crystallinity degree almost showed no change and mechanical strength became worse obviously. As a result gas permeation performance of dry CHFMs would increase dramatically with the coagulation bath temperature and show obvious "Knudson-diffusion selective" mechanism. While for wet CHFMs, permeation rates for all gases would decrease sharply and interestingly for CHFMs from coagulation bath temperature of 0 degrees C and 20 degrees C carbon dioxide became the fastest gas because of the permeation mechanism had changed to "solution selective" in wet CHFMs. While for CHFMs from coagulation bath temperature of 40 degrees C and 60 degrees C, this "solution selective" effect cannot be found because of their much looser structure.
关键词[WOS]: PERFORMANCE ;  MORPHOLOGY
语种: 英语
WOS记录号: WOS:000290555900011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142529
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Mao Zhiming,Jie Xingming,Cao Yiming,et al. EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES[J]. ACTA POLYMERICA SINICA,2011(4):395-401.
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