化工进展 ›› 2024, Vol. 43 ›› Issue (6): 2915-2927.DOI: 10.16085/j.issn.1000-6613.2023-0846
• 化工过程与装备 • 上一篇
李妍(), 吴芹(
), 陈康成(
), 张耀远, 史大昕, 黎汉生
收稿日期:
2023-05-22
修回日期:
2023-07-13
出版日期:
2024-06-15
发布日期:
2024-07-02
通讯作者:
吴芹,陈康成
作者简介:
李妍(1999—),女,硕士研究生,研究方向为渗透汽化膜分离过程。E-mail:3220211419@bit.edu.cn。
基金资助:
LI Yan(), WU Qin(
), CHEN Kangcheng(
), ZHANG Yaoyuan, SHI Daxin, LI Hansheng
Received:
2023-05-22
Revised:
2023-07-13
Online:
2024-06-15
Published:
2024-07-02
Contact:
WU Qin, CHEN Kangcheng
摘要:
聚酰亚胺有机高分子聚合物结构内含有氢键,且具有良好的耐溶剂性、易成膜性、高力学性能等优点。聚酰亚胺膜有望在渗透汽化有机溶剂脱水领域得到广泛应用。然而,聚酰亚胺膜高分子链间作用力强,链段排列紧密,往往造成溶剂分子渗透困难、渗透通量低等问题,限制其发展。对聚酰亚胺膜开展改性研究,以提高其渗透通量,同时保持高分离因子,是近年来的主要研究方向。本文对渗透汽化膜分离技术进行了概述,介绍了其工作原理及常用分离膜种类。详细综述了近年来用于渗透脱水的聚酰亚胺膜的改性研究进展,重点评述了共混、掺杂、交联和共聚改性,并分析了四种改性方法的作用原理,对分离性能的影响及其优缺点。最后,对聚酰亚胺膜在渗透汽化分离领域未来的发展方向进行展望,指出需揭示聚酰亚胺聚合物链与溶剂分子间的作用机制,解决渗透通量与选择性之间“trade-off”的制约关系。
中图分类号:
李妍, 吴芹, 陈康成, 张耀远, 史大昕, 黎汉生. 聚酰亚胺渗透汽化膜用于有机溶剂脱水的改性研究进展[J]. 化工进展, 2024, 43(6): 2915-2927.
LI Yan, WU Qin, CHEN Kangcheng, ZHANG Yaoyuan, SHI Daxin, LI Hansheng. Modified polyimide pervaporation membranes for dehydration of organic solvent[J]. Chemical Industry and Engineering Progress, 2024, 43(6): 2915-2927.
膜材料 | UiO-66-NH2负载量/% | 吸水率 /% | 甲醇 吸收率/% | 乙醇 吸收率/% | 异丙醇 吸收率/% |
---|---|---|---|---|---|
PI | 0 | 3.3±0.3 | 9.2±0.3 | 11.5±0.7 | 18.4±0.6 |
MMM | 10 | 5.6±0.5 | 8.0±0.6 | 8.3±0.3 | 10.4±0.6 |
MMM | 20 | 9.4±0.5 | 6.1±0.9 | 7.1±0.3 | 9.8±0.8 |
MMM | 30 | 16.9±0.7 | 5.0±0.2 | 6.5±0.6 | 8.2±0.8 |
表1 纯PI膜与不同UiO-66-NH2负载量的PI膜的溶剂吸收率[29]
膜材料 | UiO-66-NH2负载量/% | 吸水率 /% | 甲醇 吸收率/% | 乙醇 吸收率/% | 异丙醇 吸收率/% |
---|---|---|---|---|---|
PI | 0 | 3.3±0.3 | 9.2±0.3 | 11.5±0.7 | 18.4±0.6 |
MMM | 10 | 5.6±0.5 | 8.0±0.6 | 8.3±0.3 | 10.4±0.6 |
MMM | 20 | 9.4±0.5 | 6.1±0.9 | 7.1±0.3 | 9.8±0.8 |
MMM | 30 | 16.9±0.7 | 5.0±0.2 | 6.5±0.6 | 8.2±0.8 |
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