Dry-cast process for synthetic microporous membranes: Physico-chemical analyses through morphological studies
Dry-cast process for synthetic microporous membranes: Physico-chemical analyses through morphological studies
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DOI：
10.1016/j.memsci.2010.04.022
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发表时间：
2010-08-15
影响因子：
9.5
通讯作者：
Mbareck, Chamekh
中科院分区：
文献类型：
--
作者：
Nguyen, Quang Trong;Tahiri Alaoui, Ouafa;Mbareck, Chamekh
采用半结晶和无定形合成聚合物，将干法浇铸工艺应用于制备不同结构的微孔膜。它包括将聚合物在挥发性溶剂和不易挥发的非溶剂的混合物中的溶液浇铸成膜，并将膜留在空气中以使溶剂优先蒸发。通过液-液相转化获得干燥的微孔膜，根据聚合物的性质，有或没有聚合物结晶，而不需要在非溶剂浴中凝固膜。我们详细分析了在聚偏氟乙烯的情况下成膜的物理化学方面，然后讨论了该过程对其他常见的聚合物材料如聚氯乙烯、聚乙酸乙烯酯、聚苯乙烯和聚砜-卡多的适用性。指出了制备微孔膜的工艺优缺点。(C)2010 Elsevier B. V.保留所有权利。
The dry-cast process was applied to the preparation of microporous membranes of different structures, using semi-crystalline and amorphous synthetic polymers. It consisted in casting a solution of a polymer in a mixture of a volatile solvent and a less volatile nonsolvent into a film, and leaving the film for a preferential evaporation of the solvents in air. A dry microporous membrane was obtained through liquid-liquid phase inversion with or without polymer crystallization, depending on the polymer nature, without the need to coagulate the membrane in a nonsolvent bath. We analyzed in details the physico-chemical aspects of the membrane formation in the case of poly(vinylidene fluoride), then discussed the applicability of the process to other common polymer materials like poly(vinyl chloride), poly(vinylacetate), poly(styrene) and polysulfone-cardo. The process advantages and drawbacks in the microporous membrane preparation were given. (C) 2010 Elsevier B.V. All rights reserved.