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EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES
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
2011-04-20
DOI10.3724/SP.J.1105.2011.10107
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
关键词[WOS]PERFORMANCE ; MORPHOLOGY
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.
语种英语
WOS记录号WOS:000290555900011
引用统计
被引频次:1[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/321008/142529
专题中国科学院大连化学物理研究所
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
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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.
APA Mao Zhiming.,Jie Xingming.,Cao Yiming.,Liu Dandan.,Liu Jianhui.,...&Yuan Quan.(2011).EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES.ACTA POLYMERICA SINICA(4),395-401.
MLA Mao Zhiming,et al."EFFECT OF COAGULATION BATH TEMPERATURE ON STRUCTURE AND GAS SEPARATION PROPERTIES OF CELLULOSE HOLLOW FIBER MEMBRANES".ACTA POLYMERICA SINICA .4(2011):395-401.
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