Effects of Cooling Temperature and Aging Treatment on the Morphology of Nano- and Micro-Porous Poly(ethylene-co-vinyl alcohol) Membranes by Thermal Induced Phase Separation Method
出版日期:2014-01-23 00:00:00
著者:Cheng, Liao-ping
著錄名稱、卷期、頁數:Journal of Applied Polymer Science 131(12), 40374
摘要:Poly(ethylene-co-vinyl alcohol) (EVOH 32) / 1,3-propanediol mixtures are processed by thermally induced phase separation for the formation of porous membranes. The crystallization line was determined both by the cloud-point and DSC methods. Two precursor solution compositions, four quench temperatures and various aging times were explored. It is found possible to generate both polymer-crystallization controlled morphologies (for high quenches and/or sufficiently aged dopes), especially globular microporous ones, and novel nano-scale porous morphologies dominated by intra-binodal phase separation (for low quenches and limited or no precursor solution aging). Structural characterization of the membranes was accomplished via application of scanning electron microscopy and wide angle X-ray diffraction.
關鍵字:membranes;crystallization;ageing;nanostructured polymers;morphology
語言:en_US
ISSN:1097-4628
期刊性質:國外
收錄於:SCI
通訊作者:Liao-Ping Cheng
審稿制度:否
國別:USA
出版型式:電子版,紙本