Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method

	Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method
	Zhou, Meiqing 1; Cao, Yiming 1; Jia, Jingxuan 1,2; Kang, Guodong 1; Zou, Tong 1,2; Li, Meng 1
刊名	HIGH PERFORMANCE POLYMERS
	2017-11-01
卷号	29 期号:9 页码:1069-1082
关键词	PTFE extrusion fabrication hollow fibre membrane sintering membrane properties
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000414466300008
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149754]
专题	大连化学物理研究所_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
推荐引用方式 GB/T 7714	Zhou, Meiqing,Cao, Yiming,Jia, Jingxuan,et al. Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method[J]. HIGH PERFORMANCE POLYMERS,2017,29(9):1069-1082.
APA	Zhou, Meiqing,Cao, Yiming,Jia, Jingxuan,Kang, Guodong,Zou, Tong,&Li, Meng.(2017).Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method.HIGH PERFORMANCE POLYMERS,29(9),1069-1082.
MLA	Zhou, Meiqing,et al."Sintering process investigation during polytetrafluoroethylene hollow fibre membrane fabrication by extrusion method".HIGH PERFORMANCE POLYMERS 29.9(2017):1069-1082.