Potassium permanganate/thioureadioxide redox system‐induced grafting of methacrylic acid onto loomstate cotton fabric

Abstract

SYNOPSISGraft polymerization of methacrylic acid (MAA) to loomstate cotton fabric using the KMnO,/thioureadioxide system as the initiator was studied under different polymerization conditions. The polymerization reaction was assessed with respect to graft yield, homopolymer, total conversion, and graft efficiency. The magnitude of each of these characteristics was found to depend upon parameters such as concentrations of KMnO,, thioureadioxide, and MAA as well as liquor ratio, reaction time, and temperature of polymerization. Based on a detailed investigation of these parameters, the optimal condition for grafting is KMn04

Structure and stability of thioureate anions with water, DFT calculations

“…Thiourea is sensitive to the effect of strong oxidants [7][8][9][10][11][12][13][14][15]. Thus, the oxidation reactions of thioureas into ureas have attracted the interest of chemists for a long time [16].…”

“…Thiourea is an important industrial chemical product [1][2][3][4][5][6][7]. Animal studies on the chronic toxicity of thiourea have shown that the compound, when administered in drinking water, induces thyroid adenomas and carcinomas in rats [8].…”

A study on effect of different reaction conditions on grafting of psyllium and acrylic acid‐based hydrogels

“…19 Radical induced polymerization technique has been used to crosslink acrylamide with N, N 0 -methylene bisacrylamide. 20,21 AbdelHafiz 22 studied the graft copolymerization of methacrylic acid onto loomstate cotton fabric under different reaction conditions using KMnO 4 / thiourea dioxide system as an initiator. El-Naggar et al 23 used preirradiation technique for graft copolymerizing acrylamide onto Nylon-66.…”

Enthalpic pairwise self-interactions of urea and its four derivatives in (dimethylformamide + water) mixtures rich in water at T = 298.15 K

“…play an important role in physiological process and industrial production [1][2][3][4][5]. For instance, urea and its alkyl-substituted compounds are often considered as the breaker of water structure [6], the denaturants of native proteins [7] and have a good solubilizing effect on hydrocarbons and polar molecules [8,9].…”