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首页> 外文期刊>Journal of Applied Polymer Science >WATER-ALCOHOL SEPARATION BY PERVAPORATION THROUGH POLY(AMIDE-SULFONAMIDE)S (PASAS) MEMBRANES
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WATER-ALCOHOL SEPARATION BY PERVAPORATION THROUGH POLY(AMIDE-SULFONAMIDE)S (PASAS) MEMBRANES

机译：通过聚（酰胺-磺酰胺）S（PASAS）膜渗透分离水-醇

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摘要

Pervaporation membranes derived from seven homopolymers of poly(amide-sulfonamide)s (PASAs) were prepared by casting 10-17% polymer solutions of N,N-dimethylacetamide. The membranes were characterized by sorption experiments, scanning electron microscope, and wide-angle X-ray diffraction. During the pervaporation of 90 wt % aqueous solution of methanol, ethanol, l-propanol, and 2-propanol, all membranes were preferentially permeable to water, and their separation factors were mainly dependent on the molecular weight of the solvent. The exact structure of the PASAs had a profound effect on their pervaporation characteristics. Polymeric membrane based on N,N'-bis (4-aminophenylsulfonyl)-1,3-diaminopropane and isophthaloyl chloride exhibited the best selectivity factor of 1984 for a 10:90 (by weight) mixture of water/ethanol at 20 degrees C. However, the permeation rates of all materials for dehydration of 90 wt % ethanol were slow in a range of 6.6-34.4 g m(-2) h(-1). (C) 1997 John Wiley & Sons, Inc. [References: 15]
机译：通过浇铸10％至17％的N，N-二甲基乙酰胺聚合物溶液来制备衍生自七种聚（酰胺-磺酰胺）均聚物（PASA）的渗透膜。通过吸附实验，扫描电子显微镜和广角X射线衍射对膜进行表征。在甲醇，乙醇，1-丙醇和2-丙醇的90 wt％水溶液全蒸发期间，所有膜均优先渗透水，其分离系数主要取决于溶剂的分子量。 PASA的确切结构对其渗透特性有深远的影响。基于N，N'-双（4-氨基苯基磺酰基）-1,3-二氨基丙烷和间苯二甲酰氯的聚合物膜对20:10的水/乙醇（重量比）为10:90（按重量计）的混合物表现出最佳的选择性系数。但是，用于90 wt％乙醇脱水的所有材料的渗透速率在6.6-34.4 gm（-2）h（-1）的范围内较慢。 （C）1997 John Wiley＆Sons，Inc. [参考：15]

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