教師資料查詢 | 類別: 期刊論文 | 教師: 鄭廖平 CHENG, LIAO-PING (瀏覽個人網頁)

標題:Fine structure of poly(vinylidene fluoride) membranes prepared by phase inversion from a water/N-methyl-2-pyrollidone/poly(vinylidene fluoride) system
學年92
學期2
出版(發表)日期2004/03/01
作品名稱Fine structure of poly(vinylidene fluoride) membranes prepared by phase inversion from a water/N-methyl-2-pyrollidone/poly(vinylidene fluoride) system
作品名稱(其他語言)
著者Lin, Dar-Jong; Beltsios, Konstantinos; Chang, Cheng-Liang; Cheng, Liao-Ping
單位淡江大學化學工程與材料工程學系
出版者Hoboken: John Wiley & Sons, Inc.
著錄名稱、卷期、頁數Journal of Polymer Science, Part B: Polymer Physics 42(5), pp.830-842
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.
關鍵字Crystal structure;Crystallization;Crystals;Differential scanning calorimetry;Gelation;Isotherms;Mass transfer;Phase composition;Phase diagrams;Solvents;Water;Crystallization-induced gelation line;Poly(vinylidene fluoride);Polymeric membranes
語言英文
ISSN0887-6266
期刊性質國外
收錄於SCI
產學合作
通訊作者Cheng, Liao-Ping
審稿制度
國別美國
公開徵稿
出版型式紙本
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