磺化侧苯基杂萘联苯聚芳醚腈酮膜材料的研究  

Study on sulfonated poly(phthalazinone ether nitrile ketone)containing pendant phenyl group as membrane materials

作　　者：谭相坤 张守海[1] 刘乾 王昭琪 蹇锡高[1] TAN Xiangkun;ZHANG Shouhai;LIU Qian;WANG Zhaoqi;JIAN Xigao(College of Chemical Engineering,Dalian University of Technology,Liaoning High Performance Polymer Engineering Research Center,Liaoning Key Laboratory of Polymer Science and Engineering,Dalian Key Laboratory of Membrane Materials and Process,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院,辽宁省高性能树脂工程技术研究中心,辽宁省高分子科学与工程重点实验室,大连市膜材料与膜过程重点实验室,大连116024

出　　处：《膜科学与技术》2021年第5期17-25,共9页Membrane Science and Technology

基　　金：国家重点研发计划项目(2017YFB0307600);国家自然科学基金委创新研究群体项目(22021005);辽宁省‘兴辽英才计划’项目(XLYC1802073);大连市高层次人才创新支持计划(2019RD08)。

摘　　要：以4-(4-羟基苯基)-2,3-二氮杂萘-1-酮、4-(3-苯基-4-羟基苯基)-2,3-二氮杂萘-1-酮、2,6-二氯苯腈、4,4′-二氟二苯酮为原料,通过溶液缩聚反应,合成了侧苯基杂萘联苯聚芳醚腈酮(PPENK-P),并对PPENK-P进行磺化改性,制备出含有苯磺酸侧基的杂萘联苯聚芳醚腈酮(SPPENK-P).采用溶液浇铸法制备了SPPENK-P质子交换膜,并对其吸水率、溶胀率、机械性能、耐氧化稳定性、质子传导性等进行测试.结果表明,SPPENK-P可溶解于二甲基乙酰胺、二甲基亚砜等溶剂,5%的热失重温度在330℃以上;随着SPPENK-P中DHPZ-P单元比例的增加,SPPENK-P膜的吸水率、溶胀率、质子传导率增加,而耐氧化性降低;SPPENK-P膜在25℃下的吸水率均在8%以上,95℃下的质子传导率可达9.59×10^(-2) S/cm.Poly(phthalazinone ether nitrile ketone)containing pendant phenyl group(PPENK-P)were synthesized via high temperature polycondensation from 4-(4-hydroxyphenyl)-2,3-phthalazin-1-one(DHPZ),4-(3-phenyl-4-hydroxyphenyl)-2,3-phthalazin-1-one(DHPZ-P),2,6-dichlorobenzonitrile,and 4,4′-difluorobenzophenone.A series of sulfonated poly(phthalazinone ether nitrile ketone)containing pendant phenyl group(SPPENK-P)were prepared from the sulfonation of PPENK-P with concentrated sulfuric acid as sulfonating agent.SPPENK-P membranes were prepared through solution casting method.The membrane performance including water uptake,swelling ratio,mechanical property,oxidative stability,and proton conductivity were investigated.The results show that SPPENK-P can be dissolve in solvents such as dimethylacetamide and dimethyl sulfoxide at 25℃,and the 5%thermal weight loss temperature is above 330℃.As the proportion of DHPZ-P moiety in SPPENK-P increases,the IEC,water uptake,swelling ratio,and proton conductivity of the membranes increase,while the oxidation resistance decreases.The water uptake of SPPENK-P membranes at 25℃is above 8%,and the proton conductivity at 95℃can reach 9.59×10^(-2) S/cm.

关 键 词：二氮杂萘酮 聚芳醚腈酮 侧苯基 磺化 质子交换膜 

分 类 号：TQ326.6[化学工程—合成树脂塑料工业] TQ028.8