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Separator Membrane from Crosslinked Poly(Vinyl Alcohol) and Poly(Methyl Vinyl Ether-alt-Maleic Anhydride)

Ian Wark Institute, University of South Australia, Mawson Lakes 5095, Australia
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Academic Editor: Thomas Nann
Nanomaterials 2015, 5(2), 398-414; https://doi.org/10.3390/nano5020398
Received: 6 January 2015 / Revised: 8 March 2015 / Accepted: 12 March 2015 / Published: 25 March 2015
In this work, we report separator membranes from crosslinking of two polymers, such as poly vinyl alcohol (PVA) with an ionic polymer poly(methyl vinyl ether-alt-maleic anhydride) (PMVE-MA). Such interpolymer-networked systems were extensively used for biomedical and desalination applications but they were not examined for their potential use as membranes or separators for batteries. Therefore, the chemical interactions between these two polymers and the influence of such crosslinking on physicochemical properties of the membrane are systematically investigated through rheology and by critical gel point study. The hydrogen bonding and the chemical interaction between PMVE-MA and PVA resulted in highly cross-linked membranes. Effect of the molecular weight of PVA on the membrane properties was also examined. The developed membranes were extensively characterized by studying their physicochemical properties (water uptake, swelling ratio, and conductivity), thermal and electrochemical properties using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), thermo-gravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS). The DSC study shows the presence of a single Tg in the membranes indicating compatibility of the two polymers in flexible and transparent films. The membranes show good stability and ion conductivity suitable for separator applications. View Full-Text
Keywords: poly vinyl alcohol; separator membrane; ionic polymer; interpolymer-networked systems; battery separator; hydrogen bonding; electrochemical impedance spectroscopy; thermal analysis; dynamic mechanical analysis poly vinyl alcohol; separator membrane; ionic polymer; interpolymer-networked systems; battery separator; hydrogen bonding; electrochemical impedance spectroscopy; thermal analysis; dynamic mechanical analysis
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MDPI and ACS Style

Rohatgi, C.V.; Dutta, N.K.; Choudhury, N.R. Separator Membrane from Crosslinked Poly(Vinyl Alcohol) and Poly(Methyl Vinyl Ether-alt-Maleic Anhydride). Nanomaterials 2015, 5, 398-414.

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