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

Authors： LIU Cai-lin1, MA Chun-cheng1, HE Nian2，LIANG Qing-song2

Units： 1.State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Sichuan, Mianyang 621010, China) (2.SICHUAN SAN SAN SCIENCE&TECHNOLOGY LIMITED RESPONSIBILITY COMPANY，Chengdu，621000，China)

KeyWords： Sulfonated Poly(ether ether ketone); Proton conductivity; SPEEK/PVP membrane; Composite mechanism

ClassificationCode：0631.1+1

year,volume(issue):pagination： 2014,34(4):71-76

Abstract：

Sulfonated Poly(ther ether ketone）(SPEEK) were synthesized via chlorosulfonic acid (Cl-SO3H) sulfonated method. Furthermore, The influences of molecular weight and dosage of PVP on the structure, thermostability, film-forming, crystallization, and proton conductivity of SPEEK/PVP 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 10000 or 30000, 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 reached 13.75%, antioxidat property is about 2.06%, and the conductivity is 0.06 S?cm-1, which is remarkable better than the SPEEK membrane.

Funds：

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）

AuthorIntro：

刘才林（1964-），男，四川遂宁市人，博士，教授。研究方向：新能源材料。 Email：liucailin@swust.edu.cn

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