Herein we report a facile approach to prepare low DS microfibrillated cellulose acetoacetates and esters. All the reactions 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 features and morphology of the unmodified cellulose fibres. In comparison to previously reported synthetic routes, this method is cost-effective, more environmentally friendly through omission of extra solvents and the possibility of reusing the dispersing agents, which can be recovered by distillation.

中文翻译：

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获得低DSβ-酮酸酯和微纤化纤维素酯的简便方法

本文中，我们报告了一种制备低DS微纤化纤维素乙酰乙酸酯和酯的简便方法。所有反应均直接在纤维素浆液中进行，而无需溶剂蒸发，因为溶剂蒸发会引起角化，并且不会损坏纤维。获得的产品展示了插入的功能，同时保留了未改性纤维素纤维的主要特征和形态。与以前报道的合成路线相比，该方法具有成本效益，由于省去了额外的溶剂，因此对环境更加友好，并且可以重复使用可以通过蒸馏回收的分散剂。