Kinetics of Ru^III catalysed polymerization of methylmethacrylate by aliphatic amines in presence of carbon tetrachloride

Abstract

The kinetics of ruthenium(III) catalysed polymerization of methylmethacrylate(MMA) with aliphatic amines <i>viz. </i>ethylamine, diethylamine and triethylamine has been investigated in presence of carbontetrachloride in<i> </i>dimethylsulphoxide medium employing a dilatometric technique at 60°C. The rate of polymerization of MMA (R_p) is<i> </i>a function of [MMA], [antine], [CCl₄] [Ru^III]. In absence of either CCL₄ or amine no polymerization of MMA was observed under the experimental conditions. The polymerization (R_p) was inhibited by hydroquinone suggesting a free radical mechanism.<br> A mechanism involving the participation of charge transfer complex formed between {amine-Ru^III} complex and CCl₄ for the initiation of polymerization has been proposed.