Abstract
Copolymerization of 2-methyl-N-vinyl imidazole (MVI) with itaconic acid (IA) and methyl acrylate (MA) were studied.MVI was copolymerized with IA in water at 70°C, using potassium persulfate as an initiator, and MVI was copolymerized with MA in dioxane at the same temperature using benzoyl peroxide as an initiator. In the copolymerization of MVI with IA, the maximum conversion was obtained when equal moles of the monomers were reacted. In the copolymerization of MVI with MA, the conversion was found to increase with the molar ratio of MA to MVI in the monomer mixture. The monomer reactivity ratios in the copolymerizations were determined as follows : for MVI (1) - IA (2) r1=0.17, r2=1.02 for MVI (1) -MA (2) r1=1.28, r2=0.05 The properties of the resulting copolymers were investigated, and MVI-IA copolymer and alkalinehydrolyzed MVI-MA copolymer were found to serve as amphoteric polyelectrolytes.
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