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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of sulfonated polyetherimide/polyetherimide blend membranes
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Preparation and characterization of sulfonated polyetherimide/polyetherimide blend membranes

机译：磺化聚醚酰亚胺/聚醚酰亚胺共混膜的制备与表征

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摘要

Polyetherimide (PEI) was sulfonated by chlorosulfonic acid (CSA) in 1,2-dichloroethane for the first time. With the increase of the CSA/PEI repeat unit ratio and/or reaction time, the ion-exchange capacity (IEC) of the sulfonated polyetherimide (SPEI) increased accordingly. Water-uptake testing and contact-angle measurement showed that the hydrophilicity of the SPEI increases with the increase of the IEC. Membranes were fabricated from SPEI/PEI blends with different ratios. The morphologies of the blend membranes were examined by scanning electron microscopy, which showed that the membrane pore size is larger when SPEI with higher IEC was used. With the increase of SPEI ratio in the blend membranes, the membrane pore size also increased. The contact-angle data of the membranes showed that the hydrophilicity of the blend membrane was elevated because of the sulfonate group on the SPEI molecular backbone. (C) 2004 Wiley Periodicals, Inc. [References: 14]
机译：聚醚酰亚胺（PEI）首次在1,2-二氯乙烷中被氯磺酸（CSA）磺化。随着CSA / PEI重复单元比例和/或反应时间的增加，磺化聚醚酰亚胺（SPEI）的离子交换容量（IEC）相应增加。吸水测试和接触角测量表明，SPEI的亲水性随IEC的增加而增加。膜是由不同比例的SPEI / PEI共混物制成的。通过扫描电子显微镜检查共混膜的形态，这表明当使用具有较高IEC的SPEI时，膜孔径较大。随着共混膜中SPEI比率的增加，膜的孔径也随之增加。膜的接触角数据表明，由于SPEI分子主链上的磺酸根基团，共混膜的亲水性得到了提高。 （C）2004 Wiley Periodicals，Inc. [参考：14]

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