Chemical Polymerization of Acrylamide Initiated with Ce(IV)-Dicarboxylic Acid Redox System: Effect of Chain Length Between the Carboxyl Groups

Polymerization of acrylamide initiated with Ce(IV)- and KMnO4–mercaptosuccinic acid redox systems in acid-aqueous medium

“…As can be seen from Table 2, the initial conductivities of polymer solutions and acid values of polymers indicated an increase with augmentation of mercaptosuccinic acid in different redox systems at constant sulfuric acid concentration (0.10 mol/l) in polymerization reactions. These results support the idea that polymers synthesized by using of mercaptosuccinic acid as a reducing agent in different redox systems contain carboxyl end-groups The UV spectrum of polyacrylamide obtained using Ce(IV)-organic acid or amino acid (with or without thiol group) redox system indicates generally a peak at 254 nm, due to the complex formation between Ce(III) ions and polymer containing reducing agent as end-groups [21][22][23]. Two peaks at 238 nm and 254 nm were observed in the UV spectrum of acrylamide polymer synthesized using mercaptosuccinic acid -Ce(IV) redox system ( Figure 7).…”

“…These methods have also been used for the preparation of graft copolymers of vinyl monomers such as acrylonitrile, methylmethacrylate, acrylic acid or acrylamide [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In previous studies, water soluble polymers containing amine, hydroxyl, carboxyl, dicarboxylic or amino tri(methylene phosphonic acid) end groups were synthesized by using redox initiator systems [16][17][18][19][20][21][22][23]. The initiator system, especially using mercaptosuccinic acid was used firstly in this study.…”

Oxidative polymerization of acrylamide in the presence of thioglycolic acid

“…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]. In most previous studies, the polymerization of vinyl monomers initiated with KMnO 4 or ceric salts-organic acid reducing system were performed at relatively high temperatures.…”