Title
Preparation and infrared study of cellulose based amphiphilic materials
Authors
MOHAMED EL-SAKHAWY SAMIR KAMEL AHMED SALAMA and HEBAT-ALLAH S. TOHAMY

Received February 20, 2017
Published Volume 52 Issue 3-4 March-April
Keywords bagasse, cellulose ester, cellulose ether, amphiphilic cellulose, IR, carboxymethyl cellulose acetate butyrate

Abstract
Carboxymethyl cellulose acetate butyrate (CMCAB) was prepared for the first time from alpha cellulose extracted from sugarcane bagasse. Also, carboxymethyl cellulose (CMC) and carboxymethyl cellulose acetate (CMCA) were prepared and analyzed by FTIR, XRD and TEM. FTIR analysis indicated that, in addition to the main characteristic bands of alpha cellulose, CMC showed new characteristic absorption bands at 1599.7 and 1414.5 cm-1, which were associated with the anti-symmetric and symmetric stretching vibrations of COO-, respectively. Also, strong sharp absorption peaks were noted at 1743.3 for carbonyl C=O, at 1639.2 for CMCA and at 1748.16 and 1640.16 cm-1 for CMCAB which indicate the formation of an ester. As detected from the IR spectra, the crystallinity index of cellulose exhibited a higher value than that of CMC. XRD analysis confirmed that CMC crystallinity was reduced remarkably in comparison with that of cellulose. This decrease may be attributed to the chemical reaction steps that contributed to the breakdown of chemical and physical bonds between the cellulose fibers. The results confirmed that valuable amphiphilic CMCAB was effectively prepared in this study.