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首页> 外文期刊>Journal of Applied Polymer Science >Pervaporation separation of 1,1,2-trichloroethane-water mixture through crosslinked acrylate copolymer composite membranes
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Pervaporation separation of 1,1,2-trichloroethane-water mixture through crosslinked acrylate copolymer composite membranes

机译：通过交联的丙烯酸酯共聚物复合膜全蒸发分离1,1,2-三氯乙烷-水混合物

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摘要

The separation of a chlorinated hydrocarbon from a dilute aqueous solution through a crosslinked acrylate copolymer-porous substrate composite membrane by pervaporation was investigated. Poly(n-butyl acrylate-co-acrylic acid) and poly(n-butyl acrylate-co-2-hydroxyethyl acrylate) were synthesized and composite membranes were prepared, which were made from the crosslinked polymer and a porous substrate. Pervaporation measurement was carried out for a dilute aqueous solution of 1,1,2-trichloroethane at 25 °C and under a vacuum on the permeate side (below 10 mmHg). The separation factor, overall flux, 1,1,2-trichloroethane concentration in the membrane, and the degree of swelling decreased with increase in the acrylic acid or 2-hydroxyethyl acrylate content of the acrylate copolymer. The influence of the crosslinking agent content on the pervaporation performance was small, and the separation factor and the overall flux showed a convex curve. The structure of the crosslinking agent had no effect on the separation. The influence of the pore size of the substrate and the thickness of the polymer layer on the separation of 1,1,2-trichloro-ethane was observed.
机译：研究了通过全蒸发从交联的丙烯酸酯共聚物-多孔基材复合膜中分离出稀水溶液中的氯代烃的方法。合成了聚（丙烯酸正丁酯-丙烯酸）和聚（丙烯酸正丁酯-丙烯酸-2-羟乙酯），并制备了由交联聚合物和多孔基材制成的复合膜。在25°C和渗透侧真空（低于10 mmHg）下，对1,1,2-三氯乙烷的稀水溶液进行全蒸发测量。随着丙烯酸酯共聚物中丙烯酸或丙烯酸2-羟乙基酯含量的增加，分离因子，总通量，膜中的1,1,2-三氯乙烷浓度和溶胀度降低。交联剂含量对全蒸发性能的影响很小，分离因子和总通量呈凸曲线。交联剂的结构对分离没有影响。观察到基材的孔径和聚合物层的厚度对1，1,2-三氯乙烷分离的影响。

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