TY  - JOUR
T1  - Preparation of Hydrogel by Copolymerization of PMMA with a Polysaccharide
(Fucan N1) in Presence of a Ceric Initiator in Acidic Environment
AU - , B. Sakri AU - , B. Legseir AU - , T. Avramoglou AU - , D. Letourneur 
JO  - Journal of Engineering and Applied Sciences
VL  - 2
IS  - 8
SP  - 1283
EP  - 1289
PY  - 2007
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2007.1283.1289
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2007.1283.1289
KW  - Graft polymerization
KW  -poly-acrylic
KW  -polysaccharide
KW  -ceric initiator
KW  -hydrogel synthesis
AB  - Graft polymerization of Polymethyl Methacrylate (PMMA) on polysaccharide in presence of ceric ammonium nitrate, used as initiator, has been conducted to obtain hydro gel under best conditions (Fucan N1) = 0.5g ; (CAN) = 3.6.10<SUP>-3</SUP> Mol L <SUP>1</SUP>; (HNO<SUB>3</SUB>) = 0.2 M, temperature = 40°C, reaction time = 40 min, initiator/ Monomer rate = 1/10. In addition to a PH analysis of reaction media, an Infrared spectroscopy (IR) has been carried out to establish the appropriate synthesis conditions. This analysis has revealed a characteristic peak of the carbonyl group situated at 1733 cm <SUP>1</SUP> for the obtained copolymer Fucan-PMMA, with respect to the individual spectra of PMMA and Fucan N1. Furthermore, a viscosity analysis has been conducted on two fractions of raw solutions of Fucan in aqueous medium (H<SUB>2</SUB>O) and on the obtained copolymer as well. The outcome of this research has given us an insight to a suggestion of appropriate reaction mechanism in which the rate of polymerization (R<SUB>P</SUB>) is first order dependant on the monomer concentration and on the square-root of the CAN and initiator concentrations.
ER  -