Polymerization of acrylamide initiated with electrogenerated cerium (IV) in the presence of EDTA

Abstract

SYNOPSISPolymerization of acrylamide was carried out with cerium( IV) -EDTA redox initiator system with and without electrolysis. The effect of temperature, time, cerium( IV), and EDTA concentrations on the polymerization yield and molecular weight were studied and compared with electrolytic conditions. At low concentrations of cerium( IV ) the electrolytic method continuously supplying Ce ( IV ) from Ce (111) has an advantage over the nonelectrolytic method for which polymerization did not occur under these conditions. A possible polymerization mechanism is suggested.

Oxidative polymerization of acrylamide in the presence of thioglycolic acid

“…Therefore the polymerization of acrylamide initiated with Ce(IV)-organic reducing agents such as polyamino, amino and carboxylic acids [17][18][19][20][21][22] requires higher energy, longer time and lower acid concentration than initiated with Ce(IV)-organic reducing agents containing thiol groups. In this study, the polymerization of acrylamide using thioglycolic acid-Ce(IV) or KMnO 4 redox system in acidic aqueous medium was examined at room temperatures.…”

“…However, this method is quite laborious and time consuming. The Mv values were calculated by using the Mark-Houwink equation [18][19][20][21][22][23].…”

“…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.…”

Study on polymerization of ethylenediaminetetraacetic acid and methyl methacrylate

“…Differcontains EDTA as an end group. Tripathy et al ent mechanistic pathways have been suggested found that the polymer contains EDTA as an end by many workers [11][12][13][14][15][16][17] to explain the experimental group. 16,17 They also characterized the mechanism observation concerning redox polymerization.…”

“…[11][12][13][14][15][16][17] Such mechanisms of the polymerization suggest that the reducing agent reacts with Ethylenediaminetetraacetic acid (EDTA), an exthe ceric ion to form an intermediate complex and cellent chelating agent, 1,2 is added to foodstuffs, subsequently decomposes to the free radicals pharmaceuticals, and high-quality cosmetic prodwhich initiate polymer formation. Sarac et al 11 ucts for the control of unwanted trace metal conused the cerium(IV) -EDTA redox initiator systamination. [1][2][3][4][5] Very good catalysts are made when tem with and without electrolysis to study the EDTA forms a complex with cations, but they canpolymerization of acrylamide.…”