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首页> 外文期刊>Journal of Applied Polymer Science >GAS TRANSPORT AND STRUCTURAL FEATURES OF SULFONATED POLY(PHENYLENE OXIDE)
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GAS TRANSPORT AND STRUCTURAL FEATURES OF SULFONATED POLY(PHENYLENE OXIDE)

机译：磺化聚环氧乙烷的气体输运及结构特征

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The effect of ionomer structure on gas transport properties of membranes was investigated. For this purpose physical and transport properties of poly( phenylene oxide)(PPO) and its sulfonated derivative (SPPO) were compared. SPPO has a more rigid structure and a lower free volume, which determines low gas permeability and high permselectivity. Gas transport properties of two types of SPPO-PPO composite membranes with top layers prepared from solutions in methanol or N,N-dimethylacetamide (DMA) were investigated. The use of SPPO solution in DMA leads to the formation of membranes with higher gas permeability. It was shown that DMA is a morphologically active solvent for SPPO. Strong complexes of SPPO with DMA are formed in solution and retained upon transition into the condensed state. The plasticizing effect of DMA on SPPO determines the high gas permeability of the membranes and is in agreement with their mechanical properties. (C) 1997 John Wiley & Sons, Inc. [References: 14]
机译：研究了离聚物结构对膜气体传输性能的影响。为此目的，比较了聚苯醚（PPO）及其磺化衍生物（SPPO）的物理和传输性能。 SPPO具有更刚性的结构和更低的自由体积，这决定了低气体渗透性和高渗透选择性。研究了两种由甲醇或N，N-二甲基乙酰胺（DMA）溶液制得的顶层SPPO-PPO复合膜的气体传输特性。在DMA中使用SPPO溶液会导致形成具有更高透气性的膜。结果表明，DMA是SPPO的一种形态学活性溶剂。 SPPO与DMA的强络合物在溶液中形成，并在过渡到缩合状态后保留。 DMA对SPPO的增塑作用决定了膜的高透气性，并且与它们的机械性能一致。 （C）1997 John Wiley＆Sons，Inc. [参考：14]

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