SPEEK/PVP质子交换膜的制备研究  

Studies on the preparation of SPEEK/PVP composite proton exchange membrane

作　　者：刘才林[1] 马春成[1] 何年 梁青松 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室--省部共建国家重点实验室培育基地,绵阳621010 [2]四川三三科技有限责任公司,绵阳621000

出　　处：《膜科学与技术》2014年第4期71-76,共6页Membrane Science and Technology

基　　金：四川省非金属复合与功能材料重点实验室开放基金资助(批准号:11zxfk26)

摘　　要：采用氯磺酸(Cl-SO3H)作磺化剂,合成了磺化聚醚醚酮(SPEEK);并通过不同分子量、掺量的聚乙烯吡咯烷酮(PVP),测试了SPEEK膜的基本性能,并进行了SPEEK/PVP共混膜材的制备研究.采用傅立叶红外(FT-IR)、热重(TG)、扫描电镜(SEM)、交流阻抗(EIS)以及干湿称重法、芬顿法等,测试分析了PVP的分子量及掺量对SPEEK膜的热稳定性、形貌结构、尺寸稳定性、抗氧化性,以及质子传导性能的影响.结果表明:SPEEK/PVP(质量比为1∶1)共混膜具有较好的热稳定性,表面光滑,更加致密,溶胀度仅为13.34%,抗氧化稳定性可达2.06%,电导率达0.06S/cm,显著优于SPEEK膜.Sulfonated poly（ether ether ketone）（SPEEK） was synthesized via chlorosulfonic acid （ClSO3H） sulfonated method.Meanwhile,the influences of molecular weight and dosage of PVP on the structure,thermostability,film-forming,crystallization,and proton conductivity of SPEEK/PVP membranes were characterized by fourier transform infrared spectrum （FT-IR）,thermogravimetry（TG）,X-ray diffraction （XRD）,scanning electron microscopy （SEM）,atomic force microscope（AFM） and electrochemical impedance spectroscopy （EIS）.Meanwhile,the properties of SPEEK membrane were evaluated by dissolution method,dry-wet weight method and Fenton method.Results show that：The SPEEK/PVP membrane exhibites good thermostability to the weight molecular weights 10 000 or 30 000;when the mass ratio of PVP to SPEEK is 1 ∶ 1,the cross-section structure of SPEEK/PVP membrane is very smooth and dense,swelling degree is 13.75％,antioxidat property is about 2.06％,and the conductivity is 0.06 S/cm,which is remarkablly better than the SPEEK membrane.

关 键 词：磺化聚醚醚酮膜 质子电导率 SPEEK/PVP膜 共混作用机理 

分 类 号：O631.3[理学—高分子化学]