Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (3): 160-164 doi: 10.13538/j.1001-8042/nst.22.160-164

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Preparation and characterization of proton exchange membranes from polystyrene grafted poly(vinylidene fluoride) powder

LI Linfan~(1,*)YU Yang~(1,2)DENG Bo~1 YU Ming~1 XIE Leidong~1 LI Jingye~(1,*)   

  1. 1 Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China
LI Linfan, YU Yang, DENG Bo, YU Ming, XIE Leidong, LI Jingye. Preparation and characterization of proton exchange membranes from polystyrene grafted poly(vinylidene fluoride) powder.Nuclear Science and Techniques, 2011, 22(3): 160-164     doi: 10.13538/j.1001-8042/nst.22.160-164

Abstract:

Proton exchange membranes(PEMs)were prepared in three steps:grafting of polystyrene onto PVDF powder using pre-irradiation graft polymerization technique,processing the grafted PVDF powder into membranes of around 50-μm thickness,and sulfonating them with cholorosulfonic acid to form poly(vinylidene fluoride)-g-poly(styrene sulfonic acid)membranes.Kinetics of the graft polymerization was studied.The existing of polystyrene side-chains in the grafted PVDF powders,and PSSA groups in PEMs,were proved by FT-IR.Properties of the PEMs,i.e.the ion exchange capacity,water uptake,proton conductivity,thermal property and oxidative stability, were characterized.Dependence of properties on the degree of grafting was investigated,too.

Key words: Proton exchange membrane, Pre-irradiation graft polymerization, Polystyrene, PVDF powder