Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Homogeneous esterification of cellulose and characterization of cellulose esters
Author(s): Kongala Sirisha devi,V. K. Mathur, S. K. Nayak, S. Mohanty, Manish KumarThe present work focus on esterification of cellulose using lithium chloride–N,Ndimethylacetamide (LiCl–DMAc) solvent system with acetic anhydride and maleic anhydride system using pyridine as catalyst. Reaction temperature varied from 25 to 70 0C and the time varied from 2 to 24 hours. Small degradation in cellulose chain occurred at a temperature 70 0C .The esters prepared from cellulose in LiCl/DMAc solvent system were characterized by molecular weight determination and IR studies & viscometrically .Degree of substitution of the ester was found by calculating the amount of anhydride consumed.
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