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首页> 外文期刊>Journal of Applied Polymer Science >Characterization for Graft Polymerization of Alkyl Methacryalte onto Polydimethylsiloxane Membranes by Electron Beam and Their Permselectivity for Volatile Organic Compounds
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Characterization for Graft Polymerization of Alkyl Methacryalte onto Polydimethylsiloxane Membranes by Electron Beam and Their Permselectivity for Volatile Organic Compounds

机译：电子束表征烷基甲基丙烯酸接枝聚合到聚二甲基硅氧烷膜上及其对挥发性有机化合物的选择性

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摘要

Polydimethylsiloxane (PDMS) membranes were improved by graft poly- merization of fluoroalkyl methacrylates (F ALMA) and alkyl methacrylates (~) by electron beam, and the effect of the solubility and diffusibility of a monomer on graft pol~erizationand the pervaporation through grafted membrane were investigated. The difference of the grafted amount was small for the monomers with various solu- bility parameters and log p ow which is the logarithm of the octanol-water partition coefficient. Compared to each other in the same group of F ALMA or AMA, the sorpted and grafted amount for a monomer that has low molecular volume was high, and the sorpted and grafted amount for a monomer that has high molecular volume was low. F ALMA-grafted PDMS membranes showed high separation performance compared to PDMS membranes. Among them, 2,2,3,3,3-pentafluoropropyl methacrylate grafted PDMSmembrane, which had a high grafted amount, and F/Si calculated by the grafted amount had high selectivity for trichloroethylene (TCE). The FALMA-grafted PDMS membranes that had the high TCE concentrations in the sorbed solution exhibited high permselectivity for TCE.
机译：聚二甲基硅氧烷（PDMS）膜通过电子束对甲基丙烯酸氟代烷基酯（F ALMA）和甲基丙烯酸烷基酯（〜）进行接枝聚合，以及单体的溶解度和扩散性对接枝粉化和接枝膜的渗透作用进行了改进被调查了。对于具有各种溶解度参数和log p ow的单体，接枝量的差异很小，log p ow是辛醇-水分配系数的对数。与相同的F ALMA或AMA组相比，具有低分子量的单体的吸附和接枝量高，而具有高分子量的单体的吸附和接枝量低。与PDMS膜相比，F ALMA接枝的PDMS膜表现出高分离性能。其中，接枝量高的甲基丙烯酸2,2,3,3,3,3-五氟丙基接枝PDMS膜，由接枝量计算出的F / Si对三氯乙烯（TCE）的选择性高。在吸附溶液中具有高TCE浓度的FALMA接枝PDMS膜表现出对TCE的高选择性。

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