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首页> 外文期刊>Journal of Applied Polymer Science >CHEMICAL CRAFTED 4-VINYLPYRIDINE ONTO POLYCARBONATE MEMBRANES FOR PERVAPORATION
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CHEMICAL CRAFTED 4-VINYLPYRIDINE ONTO POLYCARBONATE MEMBRANES FOR PERVAPORATION

机译：化学裂解的4-乙烯基吡啶在聚碳酸酯膜上的渗透

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摘要

4-Vinylpyridine-homografted-polycarbonate (PC-g-4VP) membrane was prepared for water perselective pervaporation. The conditions of the chemical grafting reaction for synthesis PC-g-4VP were studied in terms of the reaction time, reaction temperature, monomer concentration, and the concentration of initiator in the reaction. The effect of feed composition, degree of swelling, and operation temperature on the pervaporation performances were investigated. It was found that water permeated through the PC-g-4VP membrane perferential in all range of feed compositions. The permeation rate and separation factor increased with increasing 4-vinylpyridine content in the membrane. PC-g-4VP membrane effectively improved both the water permeation rate and water-ethanol separation factor of the unmodified polycarbonate membrane. The total permeation rate of PC-4-VP membrane with 26.7% degree of grafting was 153 g/m(2) h, and the separation factor was above 6300 for a 90 wt % aqueous ethanol feed solution. (C) 1995 John Wiley and Sons, Inc. [References: 21]
机译：制备了4-乙烯基吡啶均接枝聚碳酸酯（PC-g-4VP）膜，用于水的选择性渗透蒸发。从反应时间，反应温度，单体浓度，反应中引发剂浓度等方面研究了合成PC-g-4VP的化学接枝反应条件。研究了进料组成，溶胀度和操作温度对全蒸发性能的影响。发现在所有组成的进料组合物中水渗透通过PC-g-4VP膜是最佳的。渗透速率和分离因子随着膜中4-乙烯基吡啶含量的增加而增加。 PC-g-4VP膜可有效提高未改性聚碳酸酯膜的透水率和水乙醇分离系数。 PC-4-VP膜的接枝率为26.7％，总渗透率为153 g / m（2）h，对于90 wt％的乙醇进料水溶液，分离系数高于6300。 （C）1995 John Wiley and Sons，Inc. [参考：21]

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