01.12.2010 | Original Paper | Ausgabe 9/2010
Esterification of cellulose with acyl-1H-benzotriazole
- Zeitschrift:
- Polymer Bulletin > Ausgabe 9/2010
Wichtige Hinweise
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.
