聚环氧氯丙烷／液晶复合富氧膜的研究
A Study on Oxygen-Enrichment of PECH/Liquid Crystal Composite Membranes
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摘要: 研究了聚环氧氯丙烷(PECHCH)/N(4-乙氧基苄叉)4-丁基苯胺(EBBA)复合膜对氧气和氮气的透过性和选择性。用示差扫描量热计(DSC)、解偏振光强仪(DLI和偏光显微镜考察了复合膜的形态结构。结果表明,当PECH/EBBA复合膜处于液晶的向列相转变温度时,有较高的气体透过性和选择性。发现只有复合膜中EBBA含量在30wt％以上,PECH和EBBA呈非均相混合时,才有较明显的富氧效果。当EBBA含量达50wt%时,氧氮分离系数α=3.78。Abstract: In this paper, we have studied on oxygen permeability and permselectivity of thepolyepichlorhydrin / EBBA composite membranes, the EBBA being a low molecularliquid crystal. The permeability coefficient P to gas revealed a distinct jump in the vicin-ity of
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