Copolymerization of cationic monomers with acrylamide in an aqueous solution

Abstract

AbstractThe radical copolymerizations of commercially available cationic monomers (M1) with acrylamide (M2) have been investigated at pH 6.1 in aqueous solutions. The cationic groups in copolymers were analyzed by a colloid titration method and the reactivity ratios were determined by the Fineman–Ross method. The values of r1 and r2 were 1.71 and 0.25 for methacryloyloxyethyltrimethylammonium chlorideM2, 1.68 and 1.26 for N,N‐dimethylaminoethylmethacrylateM2, 1.13 and 0.57 for methacrylamidopropyltrimethylammonium chlorideM2, 1.10 and 0.47 for N,N‐dimethylaminopropylmethacrylateM2, 0.47 and 0.95 for N,N‐dimethylaminopropylacrylamideM2, 0.48 and 0.64 for acryloyloxyethyltrimethylammonium chloride‐M2, and 0.58 and 6.7 for dimethyldiallylammonium chloride‐M2 systems. The Alfrey‐Price Q and e values were calculated and the linear relationship between log Q and ultraviolet absorption maxima of cationic monomers was found.