Fine structure and formation mechanism of particulate phase-inversion poly(vinylidene fluoride) membranes

doi:10.1002/polb.10513

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/44194

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題名:	Fine structure and formation mechanism of particulate phase-inversion poly(vinylidene fluoride) membranes
作者:	Lin, Dar-Jong;Beltsios, Konstantinos;Chang, Cheng-Liang;Cheng, Liao-Ping
貢獻者:	淡江大學化學工程與材料工程學系
關鍵詞:	Coagulation;Morphology;Phase diagrams;Phase separation;Polymeric membranes;Phase-inversion membranes;Fluorine containing polymers
日期:	2003-07
上傳時間:	2013-06-13 11:28:41 (UTC+8)
出版者:	Hoboken: John Wiley & Sons, Inc.
摘要:	The structure and formation mechanism of a microporous phase-inversion poly(vinylidene fluoride) (PVDF) membrane exhibiting a relatively loosely packed agglomerate of semicrystalline globules are explored. The membrane has been prepared by the coagulation of a solution of PVDF in dimethylformamide by the action of 1-octanol, which is a soft nonsolvent. Experimental observations pertain to the globule surface, which is dominated by a grainy nanostructure; the globular interior, which exhibits a range of fine structures (e.g., twisted sheets and treelike branches); and the globule–globule connections, which exhibit a sheetlike or ropelike structure. On the basis of the observed structural details and phase diagram considerations, it is proposed that the membrane structure is the result of a unique combination of a polymer crystallization and a liquid–liquid phase-separation process, with end-result globular structural features of remarkable uniformity.
關聯:	Journal of Polymer Science, Part B: Polymer Physics 41(13), pp.1578-1588
DOI:	10.1002/polb.10513
顯示於類別:	[化學工程與材料工程學系暨研究所] 期刊論文

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