Bulk Copolymerization Of Methyl Methacrylate Research Articles

Bulk copolymerization of methyl methacrylate and styrene in presence of an acrylic elastomer: 1. Kinetic investigations

The bulk copolymerization rates of methyl methacrylate and styrene in the presence and absence of an acrylic elastomer are investigated. The observed kinetic differences in systems with and without the rubber are explained in terms of the considerable influence of the elastomer macromolecules. The latter are active transfer agents in the kinetic chain propagation and they directly effect the copolymerization process. On the other hand these molecules increase the viscosity of the reaction medium and enhance the dominant influence of the diffusion factor.

Bulk copolymerization of methyl methacrylate with phenyldichlorophosphine

AbstractCopolymers of methyl methacrylate with phenyldichlorophosphine were isolated as compact, incombustible, and colorless thermoplastic resins. The copolymerization was carried out at 60°C. by the standard bulk method, azobisisobutyronitrile being used as catalyst. The experiments indicate that in the investigated reaction there are concurrent processes which lead to degradation. The effect of duration of the copolymerization process and the content of phenyldichlorophosphine in the methyl methacrylate copolymer on the extent of reaction and on the intrinsic viscosity of copolymer has been investigated.