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The Polymerization of Quaternary Ammonium Cationic Monomers with Acrylamide

1989; American Chemical Society; Linguagem: Inglês

10.1021/ba-1989-0223.ch010

0065-2393

David Hunkeler, A. E. Hamielec, W. Baade,

Synthesis and properties of polymers

The free-radical copolymerization of acrylamide with three common cationic comonomers: diallyldimethylammonium chloride, dimethylaminoethyl methacrylate, and dimethylaminoethyl acrylate, has been investigated. Polymerizations were carried out in solution and inverse microsuspension with azocyanovaleric acid, potassium persulfate, and azobisisobutyronitrile over the temperature range 45 to 60 °C. The copolymer reactivity ratios were determined with the error-in-variables method by using residual monomer concentrations measured by high-performance liquid chromatography. This combination of estimation procedure and analytical technique has been found to be superior to any methods previously used for the estimation of reactivity ratios for cationic acrylamide copolymers. A preliminary kinetic investigation of inverse microsuspension copolymerization at high monomer concentrations is also discussed.