高等学校化学学报2017，Vol.38Issue(10)：1872-1879,8.DOI:10.7503/cjcu20170240
1,4-双(二苯基膦)丁烷交联的季膦化聚芳醚酮阴离子交换膜
Phosphonium-based Crosslinked Poly( aryl ether ketone) Anion Exchange Membranes with 1,4-Bis( diphenylphosphino) butane as the Crosslinker
摘要
Abstract
Two phosphines, rigid triphenylphosphine ( TPP ) and flexible tributylphosphine ( TBP ) , were chosen to functionalize tetramethylbiphenyl-contained poly ( aryl ether ketone ) ( PAEK ) , respectively, to prepare anion exchange membranes( AEMs) . 1,4-bis( diphenylphosphino) butane was used as the crosslinker to crosslink PAEK, and the crosslinker was quaternized simultaneously. Thus the amount of functional groups of the crosslinked membranes was as the same as those of the uncrosslinked phosphonium-based PAEK membranes. Moreover, the mechanical properties of the crosslinked membranes were more effectively enhanced. The dimensional stability, conductivity, mechanical property and alkali resistance stability of the AEMs were investigated. As the crosslinking degree increased from 0 to 20％, the tensile stress of TPP and TBP modified AEMs increased from 27 MPa to 45 MPa, and from 18 MPa to 30 MPa, respectively. After exposed to 3 mol/L KOH at 60℃ for 120 h, the TPP and TBP modified AEMs maintained the conductivity of 81％ and 69％, respectively. The results indicate that the alkaline stability of the crosslinked phosphonium-based PAEK membranes is more effectively improved than that of the uncrosslinked ones. At the same crosslinking degree, the TPP modified AEMs exhibit higher tensile stress and better alkali resistance stability than that the TBP modified ones.关键词
阴离子交换膜/季膦盐/化学交联/电导率/拉伸强度/耐碱稳定性/1,4-双(二苯基膦)丁烷/聚芳醚酮Key words
Anion exchange membrane/Phosphonium/Chemistry crosslinking/Conductivity/Tensile stress/Alkali resistance stability/1/4-Bis( diphenylphosphino) butane/Poly( aryl ether ketone)分类
化学化工引用本文复制引用
徐一鑫,张登骥,叶妮雅,杨景帅,何荣桓..1,4-双(二苯基膦)丁烷交联的季膦化聚芳醚酮阴离子交换膜[J].高等学校化学学报,2017,38(10):1872-1879,8.基金项目
国家自然科学基金(批准号:51572044)和辽宁省教育厅科学研究项目(批准号:LZ2015031)资助.Supported by the National Natural Science Foundation of China( No. 51572044) and the Scientific Research Fund of Liaoning Provincial Education Department, China( No. LZ2015031) . （批准号:51572044）
