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    Title: 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
    Authors: Hsu-Hsien Chang;Konstantinos Beltsios;Yih-Hang Chen;Dar-Jong Lin;Liao-Ping Cheng
    Date: 2014-01-23
    Issue Date: 2016-04-22 13:46:13 (UTC+8)
    Publisher: John Wiley & Sons, Inc.
    Abstract: 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.
    Relation: Journal of Applied Polymer Science 131(12), 40374(8pages)
    DOI: 10.1002/app.40374
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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