Novel phase inversion process for symmetric membrane formation through thermal quenching of polymer solution in same solvent
學年 103
學期 2
出版（發表）日期 2015-04-18
作品名稱 Novel phase inversion process for symmetric membrane formation through thermal quenching of polymer solution in same solvent
作品名稱（其他語言）
著者 Yu, Hsuan-fu
單位
出版者
著錄名稱、卷期、頁數 Journal of Applied Polymer Science 132(29),　42282
摘要 A new and useful form of phase inversion for the formation of porous polymeric membranes is presented herein. As in the case of thermally induced phase separation (TIPS), this new form involves only two components (polymer and solvent) and a thermal quench; here the quench is accomplished via immersion in a cold bath of the micromolecular component (solvent) of the dope. Ιn terms of a fixed-pressure two-component phase diagram the quench is a non-vertical one. We will refer to the new method as cold-solvent induced phase separation (CIPS). In the present work we study mainly the poly(ethylene-co-vinyl alcohol)/1,3-propanediol system which leads to bi-continuous structures stemming from a combination of liquid-liquid demixing and crystallization. In addition, we compare with the case of the Nylon-l2/formic acid system that we have briefly considered before and study further herein; the consequences of the TIPS to CIPS shift of method are different for the two systems, and the two situations are representative of two general possibilities. We also report general properties such as porosity, tensile strength, water permeation flux, and crystallinity of the produced poly(ethylene-co-vinyl alcohol) membranes.
關鍵字 crystallization;membranes;morphology;polyamides;porous materials
語言 en_US
ISSN 1097-4628
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Cheng, Liao-ping
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
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