Separator membrane from crosslinked poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride)

Vashisth, C, Dutta, N and Choudhury, N 2015, 'Separator membrane from crosslinked poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride)', Nanomaterials, vol. 5, no. 2, pp. 398-414.

Document type: Journal Article
Collection: Journal Articles

Title Separator membrane from crosslinked poly(vinyl alcohol) and poly(methyl vinyl ether-alt-maleic anhydride)
Author(s) Vashisth, C
Dutta, N
Choudhury, N
Year 2015
Journal name Nanomaterials
Volume number 5
Issue number 2
Start page 398
End page 414
Total pages 17
Publisher M D P I AG
Abstract 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.
Subject Chemical Engineering not elsewhere classified
Functional Materials
Keyword(s) poly vinyl alcohol
separator membrane
ionic polymer
interpolymer-networked systems
battery separator
hydrogen bonding
electrochemical impedance spectroscopy
thermal analysis
dynamic mechanical analysis
DOI - identifier 10.3390/nano5020398
Copyright notice © 2015 by the authors; licensee MDPI, Basel, Switzerland.
ISSN 2079-4991
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