Guar gum as biosourced building block to generate highly conductiveand elastic ionogels with poly(ionic liquid) and ionic liquid
writer：B. Zhang, G. Sudre, G. Quintard, A. Serghei, L. David, J. Bernard, E. Fleury, A. Charlot.
keywords：Guar gum，Polysaccharide，Polymer electrolyte，Ionic liquid，Poly(ionic liquid)，Ionogels
source：期刊
specific source：Carbohydrate Polymers
Issue time：2017年
In this study, we report on the simple and straightforward preparation of ionogels arising from theaddition of guar gum (a plant-based polysaccharide) in a solution of precisely-defined poly(ionic liquid)chains (PIL) in imidazolium-based ionic liquid (IL). The development of intermolecular polar interactions(mainly hydrogen bonds) and topologic chain entanglements induces the formation of physical biohybridionogels, whose elastic properties can be easily tuned by varying the composition (up to 30 000 Pa). Thecombined presence of guar gum and PIL confers excellent dimensional stability to the ionogels with noIL exudation combined with high thermal properties (up to 310?C). The resulting materials are shownto exhibit gel scattering profiles and high conductivities (> 10?4S/cm at 30?C). The benefit linked tothe formation of guar/PIL associations in IL medium enables to find a good compromise between themechanical cohesion and the mobility ensuring the ionic transport.