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	Formation of poly(vinylidene fluoride) (PVDF) membranes via thermally induced phase separation
	Gu, MH ; Zhang, J ; Wang, XL ; Tao, HJ ; Ge, LT
	2010-05-07 ; 2010-05-07
会议名称	DESALINATION ; International Congress on Membranes and Membrane Processes ; Seoul, SOUTH KOREA ; Web of Science
关键词	PVDF membrane thermally induced phase separation diluents spherulitic structure TEMPERATURE Engineering, Chemical Water Resources
中文摘要	The effects of diluents, thermodynamic interactions, different quenching conditions and coarsening on the morphology of poly(vinylidene fluoride) (PVDF) membranes via thermally induced phase separation were investigated. Scanning electron microscopy indicated that an interconnected spherulitic structure was obtained in the PVDF-DMP system, while the PVDF-DMP-DOS and PVDF-DMP-DOA systems showed a jagged and sharp-edged spherulitic structure. As the interactions decreased, the spherulitic structure was increasingly non-discernable and the value of porosity increased in the order of PVDF-DMP, PVDF-DMP-DOA, PVDF-DBP and PVDF-DMP-DOS. When quenching in 353 K and 368 K, the spherulities became more discemable, and the size of spherulity increased. When quenching in different conditions, the discernible spherulitic structure was obtained in ice water, a greater spherulitic size was obtained in a water bath at 303 K, and PVDF crystallized much slower and improved in an air bath.
会议录出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/17102]
专题	清华大学
推荐引用方式 GB/T 7714	Gu, MH,Zhang, J,Wang, XL,et al. Formation of poly(vinylidene fluoride) (PVDF) membranes via thermally induced phase separation[C]. 见:DESALINATION, International Congress on Membranes and Membrane Processes, Seoul, SOUTH KOREA, Web of Science.

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