Author(s)

Shiguang Tang, Quanzhi Chen, Zhi Jiang*

Affiliation(s)

School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China.

Corresponding Author

Zhi Jiang

ABSTRACT

Through a two-step organic reaction, a reactive difluorosulfone monomer with a 3,5-diphenylbenzene side group structure—3,3'-bis(3,5-diphenylbenzene) was designed and synthesized. -4,4'-Difluorodiphenylsulfone. Using this monomer, 4,4'-difluorodiphenylsulfone and 4,4'-dihydroxybenzophenone as starting materials, a series of Sulfonated polyarylsulfone proton exchange membrane (TS-PAS-xx). The structure of the prepared polymer was characterized and analyzed by infrared spectroscopy and hydrogen nuclear magnetic resonance spectroscopy, respectively. The results show that the prepared proton exchange membrane exhibits moderate water absorption and low swelling rate. At 80 ℃, the swelling rate of the membrane does not exceed 15.7%. Atomic force microscopy tests showed that these proton exchange membranes formed an obvious "hydrophilic-hydrophobic" phase separation structure, which was conducive to the improvement of proton conductivity. The proton conductivity of TS-PAS-34 membrane reached 182 mS / cm, comparable to Nafion112, superior to other reported conductivities of some polyarylsulfone proton exchange membranes with the same ion exchange capacity (IEC). The film also has good thermal properties, mechanical properties and excellent stability against chemical oxidation.

KEYWORDS

Proton exchange membrane; Sulfonated polyarylsulfone; Water absorption; Swelling rate; Chemical oxidation stability.

CITE THIS PAPER

Shiguang Tang, Quanzhi Chen, Zhi Jiang. Preparation and properties of a class of low swelling rate sulfonated polyarylethersulfone proton exchange membrane materials. World Journal of Materials Science. 2023, 1(1): 14-20.

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