Solvent effects on radical copolymerization of methyl methacrylate and acrylonitrile

Abstract

Radical copolymerization of methyl methacrylate and acrylonitrile has been studied in six solvents at 60T, and two monomer feed ratios. The nitrogen contents of the copolymers increases in the order: chloroform < dioxane < benzene < anisole < methyl pentyl ketone < bromobenzene, suggesting an influence of the solvent on the growing radicals. ZUSAMMENFASSUNG:Die radikalische Copolymerisation von Methylmethacrylat und Acrylnitril wurde in sechs Losungsmitteln bei zwei verschiedenen Ausgangs-Monomerverhaltnissen und 60 "C untersucht. Der Stickstoffgehalt der Copolymeren nimmt in der Reihe Chloroform < Dioxan < Benzol < Anisol < Methylpentylketon < Brombenzol zu, was einen EinfluD der Losungsmittel auf die wachsenden Radikale nahelegt.

Radical polymerizations of a silicone‐containing acrylic monomer in supercritical carbon dioxide

“…26 -31 Some research, however, has demonstrated that there is an appreciable solvent effect on the reactivity ratio in some copolymerization systems; it appears to be connected mainly to the polarity of the polymerizing medium. [32][33][34][35][36][37][38][39][40] It is suggested that the polarity of the medium would be expected to affect The monomer reactivity ratios determined in this study are listed in Tables I-III. The r 2 value for SiMA-MMA copolymerization is lower than for SiMA-FOMA copolymerization in each medium.…”