Polymerization of methacrylamide in the presence of ultrasound and peroxomonosulphate

Polymerization of methacrylamide has been carried out in the presence of ul trasound and peroxomonosulphate for the first time. The rate of polymerizat ion and the rate of disappearance of peroxomonosulphate were followed simul taneously. A first order dependence on monomer and half order dependence wi th respect to peroxomonosulphate were found towards rate of polymerization. However, a first-order dependence on peroxomonosulphate was noted with rat e of peroxomonosulphate disappearance. A suitable reaction scheme is sugges ted to fit with the experimental results. The composite rate constants for the polymerization were evaluated and compared for acrylamide and methacryl amide polymerization in the presence of ultrasound. (C) 2000 John Wiley & S ons, Inc.