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Effect of the structure of ammonium salts of N, N-dialkylaminoethyl methacrylates on their spontaneous polymerization in water

The spontaneous free-radical polymerization of ammonium salts of N,N-dimethyl- and N,N-diethylaminoethyl methacrylates in concentrated aqueous solutions (pH 6.5-7.0, 17-70°C) was studied depending on the monomer structure (the nature of anions and substituents at ammonium nitrogen), the initial concentration of reagents, and the additives of inorganic salts. The process sharply accelerates when a strong reducing agent is added to the reaction system. It was hypothesized that the polymerization occurs in monomeric associates and is initiated via electron transition from an anion to a C=C bond.