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 en
ISSN 0014-3057
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 GBR
公開徵稿
出版型式 紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/53652 )

機構典藏連結