Effect of comonomer composition on the controlled free-radical copolymerization of styrene and maleic anhydride by reversible-addition fragmentation chain transfer (RAFTстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Controlled free-radical copolymerization of styrene and maleic anhydride was performed in 1,4-dioxane and tetrahydrofuran solution at 60 °C using the RAFT technique. The effect of monomer feed ratio on copolymerization kinetics and on control over molar mass and molar mass distribution was examined. In particular, the kinetics was faster and the quality of control was poorer when the proportion of maleic anhydride in the monomer feed was larger. These features were assigned to a change in the chain transfer constant, mainly due to an increase in the apparent rate constant of propagation with the proportion of maleic anhydride.