Novel piperazinium-mediated crosslinked polyimide membranes for high performance CO2 separation
Novel piperazinium-mediated crosslinked polyimide membranes for high performance CO2 separation
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DOI：
10.1016/j.memsci.2015.03.053
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发表时间：
2015-08-01
影响因子：
9.5
通讯作者：
Kim, Tae-Hyun
中科院分区：
文献类型：
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作者：
Kammakakam, Irshad;Yoon, Hee Wook;Kim, Tae-Hyun
以溴化哌嗪作为交联剂和亲二氧化碳官能团的交联型聚酰亚胺已被开发出来。这些离子基团介导的交联型聚酰亚胺薄膜表现出优异的热稳定性、机械稳定性和化学稳定性，以及对塑化的高耐受性。与其他典型的交联聚合物不同，以哌嗪为介质的悬挂式交联聚亚胺膜表现出高的二氧化碳渗透率(475.5巴雷尔)，以及高的二氧化碳/甲烷(34.5%)和二氧化碳/氮-2(18%)的选择性LiviLies。我们还证明了这些膜的二氧化碳分离性能可以通过改变交联剂的方法来调节。(C)2015爱思唯尔B.V.保留所有权利。
Crosslinked polyimides with a pendant piperazinium bromide acting as both the crosslinker and the CO2-philic functional group have been developed. These ionic-group-mediated crosslinked polyimide membranes showed excellent thermal, mechanical and chemical stabilities, as well as high tolerance to plasticization. Unlike other typical crosslinked polymers, the pendant piperazinium-mediaLed cross linked polyimicle membranes displayed high CO2 permeability of 475.5 Barrer, together with high CO2/CH4 (34.5) and CO2/N-2 (18) perrnselecLiviLies. We also demonstrate that the CO2 separation performances of these membranes can be tuned by changing the crosslinking method. (C) 2015 Elsevier B.V. All rights reserved.