Surface modification of cellulose with succinic anhydride in dimethyl sulfoxide using potassium carbonate as a catalyst.

Nobuyuki Harada, Hiroshi Uyama

Carbohydrate research 2023 Jun

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Cellulose succinates (CSs) having degrees of substitution (DSs) ranging from 0.78 to 2.77 were successfully obtained by reacting cellulose with succinic anhydride (SA) in dimethyl sulfoxide at room temperature using a small amount of inexpensive solid potassium carbonate as a catalyst. Interestingly, CSs with higher DS values were obtained with a much smaller amount of catalyst than previously reported. Moreover, it is possible to control the DS by tailoring the reaction time and mass ratio of cellulose/SA. The hydroxyl groups at the C-6, C-2, and C-3 positions were the main esterification positions. In this process, most of the raw materials are either incorporated into the product or are recoverable. The E-factor, which reflects the sustainability of a given process, was demonstrated to be reduced by 93% by recovering the raw materials. Copyright © 2023 Elsevier Ltd. All rights reserved.

Citation

Nobuyuki Harada, Hiroshi Uyama. Surface modification of cellulose with succinic anhydride in dimethyl sulfoxide using potassium carbonate as a catalyst. Carbohydrate research. 2023 Jun;528:108812