M. Pachauri et Sk. Upadhyay, Kinetics of ruthenium (III) catalysed polymerization of methyl methacrylate by triethanolamine in presence of CCl4, I J CHEM A, 39(7), 2000, pp. 747-750
Citations number
13
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
Polymerization of methyl methacrylate (MMA) with triethanolamine (TEA) and
carbon tetrachloride has been investigated in the presence of RuCl3 and in
dimethyl sulphoxide (DMSO) medium by employing a dilatometric technique at
60 degreesC. The rate of polymerization (R-p) of MMA has been found to be p
roportional to [MMA], [TEA]1/2, [CCl4](1/2) and {k' + k " [RuCl3](1/2)} whe
re k' and k " are rate constants for uncatalysed and catalysed polymerizati
on respectively. The rate of polymerization has been inhibited by hydroquin
one, suggesting a free radical mechanism. The kinetic data indicate the pos
sible participation of the charge transfer complex formed between {TEA-Ru-I
II} and CCl4 during the polymerization of MMA. In the absence of either TEA
or CCl4, no polymerization of MMA has been observed under the present expe
rimental conditions.