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01-12-2010 | Original Paper | Issue 9/2010

Polymer Bulletin 9/2010

Esterification of cellulose with acyl-1H-benzotriazole

Journal:
Polymer Bulletin > Issue 9/2010
Authors:
Matilde C. V. Nagel, Thomas Heinze
Important notes
Thomas Heinze is a member of the European Polysaccharide Network of Excellence (EPNOE) http://​www.​epnoe.​de.​eu.

Abstract

For the first time, the acylation of cellulose was realized by activation of carboxylic acid with 1H-benzotriazole. The reaction could be carried out under mild conditions. The acyl-1H-benzotriazole reacts with cellulose leading to cellulose acetate, butyrate, caproate, benzoate, myristate, and stearate with DS values between 1.07 and 1.89. The reaction proceeds completely homogeneously in dimethyl sulfoxide (DMSO)/TBAF × 3H2O (tetrabutylammonium fluoride trihydrate) using acyl-1H-benzotriazole as acylation agent. The cellulose esters were characterized by means of 1H NMR, GPC measurements, and solubility tests.

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