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Facile Method to Obtain Low DS β-ketoesters and Esters of Microfibrillated Cellulose
Carmen C. Piras,Scott A. Jamieson,Emiliano Fratini,Susana Fernández-Prieto,Johan Smets,Wim M. De Borggraeve 한국섬유공학회 2020 Fibers and polymers Vol.21 No.10
Herein we report a facile approach to prepare low DS microfibrillated cellulose acetoacetates and esters. All thereactions were performed directly in cellulose slurries without the need of solvent evaporation, which can cause hornification,and without damaging the fibres. The products obtained display the inserted functionalities while retaining the main featuresand morphology of the unmodified cellulose fibres. In comparison to previously reported synthetic routes, this method iscost-effective, more environmentally friendly through omission of extra solvents and the possibility of reusing the dispersingagents, which can be recovered by distillation.