主链刚性对磺化聚芳醚砜电解质膜性能的影响  

Influence of Backbone Rigidness on the Performance of Sulfonated Polyether Sulfone Electrolyte Membranes

作　　者：刘健美[1] 胡朝霞[1] 陈珊珊[1] 荣艺[1] 王明东[1] 魏松波[1] 陈守文[1] 

机构地区：[1]南京理工大学环境与生物工程学院,江苏南京210094

出　　处：《高分子材料科学与工程》2012年第5期85-88,共4页Polymer Materials Science & Engineering

基　　金：江苏省自然科学基金资助项目(BK2010482);南京理工大学自主科研重大专项(2010ZDJH03);南京理工大学自主科研专项资助项目(2010GJPY088);南京理工大学"紫金之星"计划(2010)

摘　　要：以六氟双酚A(HFBPA)、9,9′-双(4-羟苯基)芴(BHPF)、4,4′-二氟二苯砜及3,3′-二磺酸钠-4,4′-二氟二苯砜为原料,经高温缩聚成功合成了一系列磺化聚芳醚砜(SPAES),并通过改变BHPF及HFBPA的比例来调节聚合物主链的刚性。结果表明,随刚性组分BHPF含量的增加,SPAES膜吸水率及质子导电率降低、但在水中的稳定性增加。在BHPF与HFBPA的比例为1∶1及磺化度为50%(SPAES50-50)条件下,膜在60℃水中平面和厚度方向的尺寸变化分别为0.12和0.13,电导率达到0.137 S/cm,而经130℃高温水处理200 h后的失重率仅为7%,表明其有望在高温燃料电池中得到应用。A series of novel sulfonated poly （arylene ether sulfone） （SPAES） copolymers were successfully synthesized from 6F-bisphenol A （HFBPA）, 9,9＇-bis （4-hydroxyphenyl） fluorine （BHPF）, 4,4＇-difluorodiphenyl sulfone （DFDPS） and 3, 3＇-disulfonate-4, 4＇-difluorodiphenyl sulfone （SDFDPS） via high temperature copolymerization. The rigidness in the polymer backbone was controlled by the ratio of BHPF to HFBPA. As the increase in the ratio of BHPF, the SPAF^S membranes display increased stability towards water but lower water uptake and proton conductivity. The membrane of SPAESS0-50 （BHPF/HFBPA 50/50 in molar ratio and 50% sulfonation degree） exhibits dimensional change of 0.12 and 0.13 in the plane and thickness direction, respectively, and proton conductivity of 0. 137 S/cm in water and at 60 ℃, as well as mass loss of 7 % after aging treatment for 200 h in water at 130 ℃, suggesting their potential application in the high temperature fuel cell field.

关 键 词：质子交换膜 刚性 膜稳定性 质子导电率 

分 类 号：TM911.48[电气工程—电力电子与电力传动]