Preparation and application of crosslinked polyvinyl alcohol in electrosorption

doi:10.3969/j.issn.1000-5641.201931003

Abstract

Abstract: Sulfosuccinic acid (SSA) can be used as a crosslinking agent and a donor of a hydrophilic group when fabricating a cation exchange membrane. In this study, SSA was crosslinked with polyvinyl alcohol to form a cation exchange membrane for a capacitive deionization system. In this study, the impact of manufacturing parameters (i.e., crosslinker content, crosslinking temperature) on the deionization performance of a composite membrane were investigated in detail. A comparison was made between a capacitive deionization system (CDI) without an ion exchange membrane and a membrane capacitive deionization system (MCDI) coated with a PVA/SSA layer. The results show that the adsorption capacity and charge efficiency can be enhanced by 15% and 25%, respectively, with the PVA/SSA membrane layer; furthermore, the optimal mass fraction of SSA is 5%, and the optimal crosslinking temperature is 100 ℃.

Key words: ion-exchange membrane, sulfosuccinic acid, polyvinyl alcohol composite membrane, capacitive deionization

CLC Number:

P747⁺.99

CHEN Ling, MAO Shudi, ZHANG Yi, LI Zhe, PIAO Xianqing, SUN Zhuo, ZHAO Ran. Preparation and application of crosslinked polyvinyl alcohol in electrosorption[J]. Journal of East China Normal University(Natural Science), 2020, 2020(2): 120-130.

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