Effect of substitution groups on the homopolymerization activity of methyl aryl diallyl ammonium chloride

Abstract

AbstractDimethyl diallyl ammonium chloride (DMDAAC), recognized for its high positive charge density among the several diallyl quaternary ammonium cationic monomers, has been constrained in lipophilic applications by its structure. In this article, benzyl, p‐methylbenzyl, and p‐nitrobenzyl were introduced as structural modifications of DMDAAC to compensate for this. The effects of the introduced aryl structures on the molecular structure of the modified diallyl methyl aryl ammonium chloride and the polymerization activity of the monomers were explored by quantum chemical calculations and homopolymerization kinetic studies with ammonium persulfate (APS) as initiator. The results intuitively revealed the negative effect posed by the electron‐absorbing effect of the substituents on the polymerization activity of the monomers, and also highlighted the important role of the steric effect. The above work has provided a good theoretical foundation and experimental reserve for further research on the preparation and application of methyl aryl diallyl ammonium chloride.