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首页> 外文期刊>Journal of Applied Polymer Science >Characterization of graft polymerization of fluoroalkyl methacrylate onto PDMS hollow-fiber membranes and their permselectivity for volatile organic compounds
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Characterization of graft polymerization of fluoroalkyl methacrylate onto PDMS hollow-fiber membranes and their permselectivity for volatile organic compounds

机译：甲基丙烯酸氟烷基酯在PDMS中空纤维膜上的接枝聚合反应及其对挥发性有机化合物的选择性

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摘要

Polydimethylsiloxane (PDMS) hollow-fiber membranes grafted with 1H,1H,9H-hexadecafluorononyl methacrylate (HDFNMA), which is a fluoroalkyl methacrylate, using a Co-60 irradiation source, were characterized and applied to pervaporation. The PDMS hollow-fiber membranes were filled with NZ gas and sealed. The membranes and the HDFNMA solution were then irradiated simultaneously. In the HDFNMA solution, graft polymerization was performed. The degree of grafting of the outside surface of the hollow fiber was greater than that in the inside surface of the hollow fiber. In the grafted PDMS hollow-fiber membranes, the best separation performance was shown due to the introduced hydrophobic polymer, poly(HDFNMA). The grafted membrane had a microphase-separated structure, that is, a separated structure of PDMS and graft-polymerized HDFNMA. The permeability of molecules in the poly(HDFNMA) phase was so low that the diffusion of molecules was prevented in the active layer with many poly(HDFNMA) domains, as the feed solution was introduced through the inside of the hollow fibers and the outside was vacuumed. As the feed solution was introduced through the outside of the hollow fibers and the inside was vacuumed, the diffusion of molecules was not prevented in the active layer with few poly(HDFNMA) domains. (C) 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1573-1580, 2003. [References: 62]
机译：使用Co-60辐照源对接枝了1H，1H，9H-甲基丙烯酸十六烷基氟壬基酯（HDFNMA）的聚二甲基硅氧烷（PDMS）中空纤维膜进行表征，并将其应用于全蒸发。将PDMS中空纤维膜充满NZ气体并密封。然后同时辐照膜和HDFNMA溶液。在HDFNMA溶液中，进行了接枝聚合。中空纤维的外表面的接枝度大于中空纤维的内表面的接枝度。在接枝的PDMS中空纤维膜中，由于引入了疏水性聚合物聚（HDFNMA），因此显示出最佳的分离性能。接枝膜具有微相分离结构，即PDMS和接枝聚合的HDFNMA的分离结构。聚（HDFNMA）相中分子的渗透性非常低，以至于通过中空纤维的内部引入进料溶液，可以防止分子在具有许多聚（HDFNMA）域的活性层中扩散。吸尘。由于进料溶液是通过中空纤维的外部引入的，内部是真空的，因此在具有很少的聚（HDFNMA）域的活性层中分子的扩散不会受到阻止。 （C）2003 Wiley Periodicals，Inc. J Appl Polym Sci 88：1573-1580，2003。[参考：62]

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