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题名: Fabrication of high performance Matrimid/polysulfone dual-layer hollow fiber membranes for O-2/N-2 separation
作者: Ding, Xiaoli1, 2;  Cao, Yiming1;  Zhao, Hongyong1, 2;  Wang, Lina1;  Yuan, Quan1
关键词: dual-layer hollow fiber membrane ;  substructure resistance ;  spinneret dimension ;  dope composition ;  binodals ;  aging phenomenon
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2008-10-15
DOI: 10.1016/j.memsci.2008.06.042
卷: 323, 期:2, 页:352-361
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Matrimid/polysulfone (PSf) dual-layer hollow fiber membranes were fabricated by using co-extrusion and dry-jet wet-spinning phase-inversion techniques. The effects of the spinning dope composition, spinneret dimension, spinneret temperature and the air gap distance on the hollow fiber membranes separation performance were studied. Aging phenomenon was also studied. After coated by 3 wt% silicon solution, the hollow fiber membranes have an O-2/N-2 selectivity of 7.55 at 25 degrees C, 506.625 kPa which exceeds the intrinsic value of Matrimid. The membranes have an O-2 permeance of 9.36 GPU with an apparent dense-layer thickness of 1421 A calculated from the O-2 permeability. SEM images show the high porosity underneath the dense skin. It indicates that non-solvent addition is not necessary in the inner spinning dope to induce the macroviod formation. The binodals of the Matrimid/solvent/H2O and PSf/solvent/H2O indicate that the composition of the spinning dope plays an important role in the structure and the gas separation performance of the dual-layer hollow fiber membranes. The delayed demixing of the inner spinning dope may fabricate low resistance support layers in the dual-layer hollow fiber membranes. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]: CROSS-LINKING MODIFICATION ;  DENSE-SELECTIVE LAYER ;  GLASSY POLYMER-FILMS ;  GAS SEPARATION ;  PHASE-SEPARATION ;  AGING PHENOMENON ;  CO-EXTRUSION ;  MIXED-GAS ;  POLYIMIDE ;  WET
语种: 英语
WOS记录号: WOS:000259759000016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140833
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:
Ding, Xiaoli,Cao, Yiming,Zhao, Hongyong,et al. Fabrication of high performance Matrimid/polysulfone dual-layer hollow fiber membranes for O-2/N-2 separation[J]. JOURNAL OF MEMBRANE SCIENCE,2008,323(2):352-361.
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