Exploiting poly(ionic liquids) and nanocellulose for the development of bio-based anion-exchange membranes
authors Vilela, C; Sousa, N; Pinto, RJB; Silvestre, AJD; Figueiredo, FML; Freire, CSR
nationality International
journal BIOMASS & BIOENERGY
author keywords Anionic conductivity; Anion-exchange membranes; Bacterial nanocellulose; Fuel cells; Nanostructured composites; Poly(ionic liquid)
keywords AMPHIPHILIC CATIONIC COPOLYMERS; FUEL-CELL APPLICATIONS; ALKALINE STABILITY; POLYMER; CHLORIDE; CONDUCTIVITY; STRATEGIES
abstract The present work exploits the combination of a poly(ionic liquid) and nanocellulose for the design of functional nanostructured composites with potential application as bio-based anion-exchange membranes. So, a series of nanocomposite membranes based on a tetraalkylammonium derived polymeric ionic liquid, i.e. poly(methacroylcholine chloride) (PMACC), and bacterial nanocellulose (BC) were fabricated by the in situ free radical polymerization of methacroylcholine chloride within the swollen tridimensional BC network under green reaction conditions. The ensuing nanocomposites are significantly more transparent than pristine BC and show good mechanical properties (Young's modulus = 0.46 -8.42 GPa) and thermal stability up to 210-220 degrees C. In addition, the nanostructured membranes display high water uptake capacity and low crystallinity in comparison with pure BC, owing to the incorporation of the amorphous PMACC. The through-plane anionic conductivity of the membranes is strongly humidity-dependent and reaches a maximum of 10.0 mScm(-1) (94 degrees C, 98% relative humidity) for the membrane with the highest content of PMACC. These promising results emphasise the potential of these anion separator nanocomposites as bio-based alternative exchange membranes for application in fuel cells and related applications. (C) 2017 Published by Elsevier Ltd.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0961-9534
year published 2017
volume 100
beginning page 116
ending page 125
digital object identifier (doi) 10.1016/j.biombioe.2017.03.016
web of science category Agricultural Engineering; Biotechnology & Applied Microbiology; Energy & Fuels
subject category Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels
unique article identifier WOS:000400037000013
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  impact metrics
times cited (wos core): 0
journal impact factor (jcr 2016): 3.219
5 year journal impact factor (jcr 2016): 4.186
category normalized journal impact factor percentile (jcr 2016): 76.141
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