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首页> 外文期刊>Journal of Applied Polymer Science >SYNTHESIS AND EVALUATION OF AROMATIC POLYAMIDE MEMBRANES FOR DESALINATION IN REVERSE-OSMOSIS TECHNIQUE
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SYNTHESIS AND EVALUATION OF AROMATIC POLYAMIDE MEMBRANES FOR DESALINATION IN REVERSE-OSMOSIS TECHNIQUE

机译：反渗透技术中脱盐用芳香族聚酰胺膜的合成与评价

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摘要

Reverse-osmosis membrane-grade aromatic polyamides have been synthesized by reacting 3,5-diaminobenzoic acid separately with three different acylchlorides, viz. isophthaloyl chloride, terephthaloyl chloride, and 4,4'-diphenyldicarboxylic acid chloride. Using these polyamides, asymmetric membranes were developed and characterized for various physical parameters, such as Staverman coefficient, membrane potential, and percent salt rejection using sodium chloride solution under high pressure. The effects of pressure, feed concentration, and feed flow rate have been studied on membrane transport parameters, viz. pure water permeability constant, product rate, solute transport parameter, and separation factor. The effects of annealing temperature and solvent evaporation time on the performance of the membranes were also studied. The analysis of the reverse-osmosis data revealed that the membranes prepared from the 3,5-diaminobenzoic acid and 4,4'-diphenyldicarboxylic acid chloride are superior to the membranes prepared from other polymeric materials. (C) 1997 John Wiley & Sons, Inc. [References: 20]
机译：反渗透膜级芳族聚酰胺是通过3,5-二氨基苯甲酸分别与三种不同的酰氯反应合成的。间苯二甲酰氯，对苯二甲酰氯和4,4'-二苯基二羧酸氯。使用这些聚酰胺，开发了不对称膜，并针对各种物理参数进行了表征，例如Staverman系数，膜电位和使用氯化钠溶液在高压下的脱盐率。已经研究了压力，进料浓度和进料流速对膜运输参数的影响，即。纯净水的渗透常数，产水率，溶质运移参数和分离系数。还研究了退火温度和溶剂蒸发时间对膜性能的影响。对反渗透数据的分析表明，由3，5-二氨基苯甲酸和4，4′-二苯基二羧酸氯化物制备的膜优于由其他聚合物材料制备的膜。 （C）1997 John Wiley＆Sons，Inc. [参考：20]

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