Table of Contents
International Journal of Carbohydrate Chemistry
Volume 2012 (2012), Article ID 209085, 7 pages
http://dx.doi.org/10.1155/2012/209085
Research Article

Synthesis and Characterization of Graft Copolymer of Dextran and 2-Acrylamido-2-methylpropane Sulphonic Acid

Department of Chemistry, Banaras Hindu University, Varanasi 221005, India

Received 21 May 2012; Accepted 24 July 2012

Academic Editor: R. J. Linhardt

Copyright © 2012 Venkanna Azmeera et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel biodegradable graft copolymer of dextran (Dx) and 2-acrylamido-2-methyl-1-propane sulphonic acid (AMPS) was synthesized by grafting poly-AMPS chains onto dextran backbone by free radical polymerization using ceric ammonium nitrate (CAN) as an initiator. Different amounts of AMPS were used to synthesize four different grades of graft copolymers with different side chain lengths. These grafted polymers were characterized by elemental analysis, FTIR, 1HNMR, rheological technique, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray diffractometry (XRD). They exhibited efficient flocculation performance in kaolin suspension.