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Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method
Jia, Jingxuan1,2; Kang, Guodong1; Zou, Tong1,2; Li, Meng1; Zhou, Meiqing1; Cao, Yiming1
关键词Ptfe Extrusion Fabrication Hollow Fibre Membrane Sintering Membrane Properties
刊名HIGH PERFORMANCE POLYMERS
2017-11-01
DOI10.1177/0954008316669409
29期:9页:1069-1082
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]PTFE POROUS MEMBRANE ; MOLECULAR-WEIGHT ; CRYSTALLINE-STRUCTURE ; POLY(TETRAFLUOROETHYLENE) ; MELT ; POWDER ; PASTE ; DISTILLATION ; TEMPERATURE ; MECHANISM
英文摘要In this study, the effect of sintering conditions including manner, temperature and duration on properties of polytetrafluoroethylene (PTFE) hollow fibre membrane fabricated by extrusion method was intensively investigated. Different from un-sintered and relaxed sintered, the fixed sintered PTFE hollow fibre membrane was observed to generate a uniform fibril-node' porous structure and a main crystal transformation to folded chain crystal with smaller size. Consequently, it was found that for fixed setting sintering, both temperature increase from 340 degrees C to 400 degrees C and duration prolongation obviously improved pore size, ethanol permeation performance and mechanical strength. Additionally, the test results revealed that the membrane sintered below virgin melting point (350 degrees C) had a noticeable higher porosity but poorer ethanol permeation performance that could be primarily attributed to increased ratio of closed pore. The sintering condition exhibited evident influence on PTFE hollow fibre membrane thermal stability, though it showed no alteration to the thermal decomposition of PTFE. The obtained PTFE hollow fibre membrane was tested to evaluate their vacuum membrane distillation (VMD) performances. It was found that PTFE membrane from lower sintering temperature delivered a better salt rejection; on the other hand, the permeate flux was improved by increased vacuum pressure during VMD operation.
语种英语
WOS记录号WOS:000414466300008
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149691
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 Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
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GB/T 7714
Jia, Jingxuan,Kang, Guodong,Zou, Tong,et al. Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method[J]. HIGH PERFORMANCE POLYMERS,2017,29(9):1069-1082.
APA Jia, Jingxuan,Kang, Guodong,Zou, Tong,Li, Meng,Zhou, Meiqing,&Cao, Yiming.(2017).Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method.HIGH PERFORMANCE POLYMERS,29(9),1069-1082.
MLA Jia, Jingxuan,et al."Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method".HIGH PERFORMANCE POLYMERS 29.9(2017):1069-1082.
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