聚丙烯腈膜改性制备正渗透复合膜基膜

发布时间：2018-04-23 09:26

本文选题：聚丙烯腈膜 + 界面聚合　；参考：《天津工业大学学报》2017年05期

【摘要】：为提高聚丙烯腈(PAN)膜的亲水性,在聚丙烯腈膜表面接枝超支化聚乙烯亚胺(HPEI),得到亲水性的PAN膜;然后用界面聚合方法在膜表面涂覆一层聚酰胺层,得到正渗透复合膜.测试结果表明:水接触角由64.5°降到23.4°.与PAN膜相比,PAN-g-PEI孔径减小,制备得到的正渗透复合膜水通量下降,由7.4 L/(m2·h)降至3.5 L/(m2·h);反向溶质渗透通量下降,由38.7 g/(m2·h)降至22.2 g/(m2·h).这说明接枝聚乙烯亚胺的聚丙烯腈膜(PAN-g-PEI)亲水性得到明显改善.
[Abstract]:In order to improve the hydrophilicity of polyacrylonitrile (pan) membrane, the hyperbranched polyimide (PAN) membrane was grafted on the surface of polyacrylonitrile (pan) membrane to obtain the hydrophilic PAN membrane, and then an interfacial polymerization method was used to coat a layer of polyamide layer on the membrane surface to obtain a composite membrane with normal osmosis. The results show that the water contact angle is reduced from 64.5 掳to 23.4 掳. Compared with the PAN membrane, the pore size of PAN-g-PEI decreased, the water flux of the prepared composite membrane decreased from 7.4 L/(m2 h to 3.5 L/(m2 h, and the reverse solute permeation flux decreased from 38.7 g/(m2 h to 22.2 g/(m2 hU. This shows that the hydrophilicity of PAN-g-PEI is improved obviously.
【作者单位】：天津工业大学材料科学与工程学院;天津工业大学省部共建分离膜与膜过程国家重点实验室;
【基金】：国家自然科学基金资助项目(21574100,21274108)
【分类号】：TQ051.893

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