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首页> 外文期刊>Journal of Applied Polymer Science >Pervaporation of acetone-chlorinated hydrocarbon mixtures through polymer blend membranes of natural rubber and epoxidized natural rubber
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Pervaporation of acetone-chlorinated hydrocarbon mixtures through polymer blend membranes of natural rubber and epoxidized natural rubber

机译：通过天然橡胶和环氧化天然橡胶的聚合物共混物膜对丙酮-氯代烃混合物进行全蒸发

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Transparent nonporous membranes were prepared by blending natural rubber (NR) with epoxidized NR (ENR). These blend membranes were evaluated for the selective separation of chlorinated hydrocarbons from acetone. The flux and selectivity of the membranes were determined both as a function of the blend composition and feed mixture composition. Results showed that polymer blending method could be very useful to develop new membranes with improved permselectivity. Pervaporation properties could be optimized by adjusting the blend composition. NR/ENR 70/30 and NR/ENR 30/70 composition showed a decrease in flux and selectivity, whereas the 50/50 composition showed increased flux and increased selectivity. Chlorinated hydrocarbons permeated preferentially through all the tested membranes. The feed mixture composition also strongly influenced the pervaporation characteristics of the blend membranes. Permselectivity was found to depend on the molecular size of the penetrants.
机译：通过将天然橡胶（NR）与环氧化NR（ENR）共混来制备透明无孔膜。对这些共混膜进行了评估，以从丙酮中选择性分离氯代烃。确定膜的通量和选择性，作为共混物组成和进料混合物组成的函数。结果表明，聚合物共混方法可能对开发具有更高渗透选择性的新型膜非常有用。可以通过调节共混物的组成来优化全蒸发性能。 NR / ENR 70/30和NR / ENR 30/70组成显示通量和选择性降低，而50/50组成显示通量和选择性增加。氯化烃优先渗透到所有测试膜中。进料混合物的组成也极大地影响了共混膜的全蒸发特性。发现渗透选择性取决于渗透剂的分子大小。

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