Water‐soluble polymers. I. Synthesis of N‐succinimido (N) thiocarbonyl acrylamide and its polymerization: Grafting of this monomer and acrylamide onto poly(vinyl alcohol)

Abstract

SYNOPSISA new monomer, N-succinimido (N) thiocarbonyl acrylamide is formed when succinic anhydride, thiourea, and acryloyl chloride are condensed in mole proportions at low temperatures. The monomer is polymerized and graft copolymerized onto poly (vinyl alcohol) using a potassium bromate-thiourea redox system. Acrylamide is also similarly grafted to poly( vinyl alcohol) using the same initiator system. Grafting efficiencies of the monomers are determined from the elemental analyses data of the graft copolymers. Thermal behavior of the polymers are derived from the DSC thermograms of the polymers. 0 1993

Kinetic studies of aqueous polymerization of acrylic acid initiated using potassium bromate/sodium metabisulphite redox pair

“…However, no polymer was produced in 40 min when the aqueous acrylic acid and the aqueous sodium metabisulphite were nitrogen pre-purged separately and then were mixed together. This is in agreement with the observation of Palit and co-workers,28 and indicated that the polymerization in the former case was probably initiated by reaction (6) rather than by a reaction between acrylic acid and sodium metabisulphite.…”

“…It was found that the theoretically derived polymerization rate relationship is in good agreement with the experimental results, except that the order of 0É82 for bisulphite concentration from the experimental results was higher than the predicted order of 0É5. The deviation was attributed to the oxidation of bisulphite by atmospheric oxygen via reaction (6). This reaction could be another reason for the high reaction order with respect to the concentration of sodium metabisulphite in the present polymerization.…”