Cellulose represents a promising alternative regarding the development of innovative materials due to its ubiquitous presence in biomass, its hierarchical structure and the possibility to be modified through numerous chemical reactions (1). However, despite a large panel of processes described in literature (2), there is still a need for developing new approaches conjugating sustainability and economical improvement. Herein we describe the rational use of modified polysaccharidic chains to build an intermediate organic layer (physically) interacting with cellulosic substrates and capable to undergo chemical reactions to modify cellulose surface properties (Fig. 1).<br/>In this study, allyl, acrylate and alkyne functionalized xyloglucan and carboxymethyl cellulose were prepared in mild and non-degrading aqueous medium (3). Their affinity to cellulosic surfaces was investigated via gravimetric method and QCM-D analysis on cellulose paper and cellulose microfibrils respectively. The latter results were correlated with those obtained with chemical titration analysis of the modified surfaces (4). A mapping of the deposition was also performed by confocal Raman spectroscopy. Finally, the reactivity of these new derivatives was evaluated through their capacity to copolymerize in water with acrylic acid and acrylamide monomers leading to new bio-hybrid hydrogels. This approach opens the way for designing a platform of new cellulosic materials.<br/><br/>

Modification of the cellulosic surfaces through adsorption of reactive polysaccharides

255th National Meeting (2018)

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