Copolymerisation alternee du methacrylate de methyle et du styrene complexes par du Chlorure de Zinc en milieu aqueux

Abstract

Sommaire: Dans cet article, nous discutons de nos r~sultats de ia copolym&isation complex& du m&hacrylate de m&hyle et du styrene avec du chlorure de zinc. Le rendement de la r~action a &~ &udi~ en fonction de la variation des concentrations de l'agent complexant et de l'eau ainsi qu'en foncfion du temps de r~action. Nous avons trouv~ que le complexant et l'eau ont une influence inverse sur le rendement quant au temps de r~action; il permet d'augmenter le rendement. Une ~quation bas& sur nos hypotheses a &~ obtenue. Dans cette ~quation, le rendement est donn~ en fonction des cinq variables suivantes: concentration des monom~res, de l'agent complexant et de l'eau ainsi que du temps de ia r~action. Les r&ultats exp&imentaux ont &~ compares aux valeurs obtenues ~ partir de cette ~quation et indiquent une bonne concordance.Abstract: In this paper we present some of our copolymerization results of methyl methacrylate with styrene in the presence of a complexing agent, zinc chloride. The reaction rates were studied as function of the level of complexing agent, water and time. It was found that the complexing agent level and the water level have opposite effect on the reaction yield, the reaction yield increasing as the level of the complexing agent is increased. The reaction time has also a positive effect on the yield. Using the interrelations between the various factors affecting the reaction an equation was derived ; it relates the reaction yield with the following variables : monomers, complexing agent and water concentration as well as the reaction time. The experimer~tal results were compared with theoretical values obtained from this equation and it showed a good fit.

A study of molecular weight of methyl methacrylate–styrene copolymer

“…The exact polymerization and some polymer recovery sequences are given elsewhere. 16 We shall however go over the main points here of the polymer recovery in order to complete the picture.…”