The polymerization of acrylamide initiated by ceric nitrate‐3‐chloro‐1‐propanol redox systems

Abstract

The polymerization of acrylamide initiated by ceric nitrate and 3‐chloro‐1‐propanol was studied in aqueous solution at 25°C. At constant hydrogen ion and nitrate ion concentration, the rate of polymerization was found to be independent of the ceric ion concentration. The molecular weight of the polymer was very low. To explain the data, a kinetic scheme is proposed whereby ceric ions are responsible for both initiation and termination. The rate constant for oxidative termination was found to be of the order of 105 l. mole−1 sec.−1 and varied with the hydrogen ion and the nitrate ion concentrations.

Synthesis of a cellulose‐grafted polymeric support and its application in the reductions of some carbonyl compounds

“…In this work, grafting onto cellulose has been carried out in the presence of 4-VP with CAN as a redox initiator. Ceric ions are known to form complexes with various functional groups 17,18 that undergo decomposition by one electron-transfer mechanism to produce free radicals, by which the grafting of the appropriate monomer takes place. The presence of radicals on the cellulose backbone has been confirmed by electron spin resonance measurements.…”

Oxidative polymerization of acrylamide in the presence of thioglycolic acid

“…graft copolymers of vinyl monomers such as acrylonitrile, methylmethacrylate, acrylic or acrylamide [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Water-soluble polymers containing amine, hydroxyl, carboxyl or dicarboxylic end groups by using redox initiator system were synthesized [18][19][20][21][22][23][24].…”

Effect of Gamma Rays 60Co Radiation on Grafting Polymerization of Methyl Methacrylate on Saw Dust

“…It is observed that with increased initiator concentration, the degree of grafting increased, attained a maximum and then decreased. This is due to increase concentration of initiator reacts with polymer radical and stops growth without bringing about transfer of electrons [7]. The grafting efficiency decreased steadily with increase in the initiator concentration.…”

“…The pH of chelate solutions were adjusted by PW9409 pH Meter using sodium hydroxide (free from carbonate) and hydrochloric acid. The stock solutions of ASTA and FeCl 3 were standardized [7,8]. The Fe(III) solutions were mixed with ASTA solutions, both in predetermined concentrations for executing molar ratio, continuous variation and slope ratio methods [4,5,9].…”