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 and crystallinity of porous Nylon 66 membranes prepared by phase inversion in the water/formic acid/Nylon 66 system
學年94
學期2
出版(發表)日期2006/02/01
作品名稱Fine structure and crystallinity of porous Nylon 66 membranes prepared by phase inversion in the water/formic acid/Nylon 66 system
作品名稱(其他語言)
著者Lin, Dar-jong; Chang, Chi-lin; Lee, Chih-kang; Cheng, Liao-ping
單位淡江大學化學工程與材料工程學系
出版者Kidlington: Pergamon
著錄名稱、卷期、頁數European Polymer Journal 42, pp.356-367
摘要Microporous Nylon-66 polymeric membranes were prepared by immersion–precipitation from a ternary system, water/formic acid/Nylon 66. Depending upon the precipitation conditions, membranes with morphologies that reflect the sequence of liquid–liquid demixing (as characterized by cellular pores) and crystallization (as characterized by crystal particles) events during the course of precipitation were obtained. The details of the membrane morphologies were disclosed using a low voltage field emission scanning electron microscope (FESEM) at very high resolutions. In particular, nano-scale fine structures such as dendritic crystal elements, nano-pores, nano-grains, branching lamellae, etc., which were rarely presented in the membrane literature. Wide angle X-ray diffraction analyses indicated that Nylon-66 crystallized into ‘α’ structure in all prepared membranes. Crystallinities were determined by appropriate deconvolution of the diffraction peaks. The results indicated that membranes prepared by a well-dissolved casting dope had a somewhat higher crystallinity than those prepared by incipient dopes being in metastable states with respect to crystallization. This observation was confirmed by Fourier transform infrared spectroscopy and DSC thermo analyses.
關鍵字Polyamide; Immersion–precipitation; Cellular pores; Spherulites; Crystallinity
語言英文
ISSN0014-3057
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式紙本
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