One pot synthesis and characterization of industrially important graft copolymer (GOH-g-ACM) by using peroxymonosulphate/ mercaptosuccinic acid redox pair

Abstract

Guar gum-g-polyacrylamide is a graft copolymer which is used for many industrial applications. This paper outlines the details of synthesis of guar gum -gacrylamide by using potassium peroxymonosulphate/ mercaptosuccinic acid redox pair in an inert atmosphere and their characterization by infrared spectroscopy, UV analysis and study of swelling and thermal properties. Grafting characteristics: %G, %E, %C, %A and %H were determined by using Fanta's definition; rate of grafting was also calculated. On studying the effect of reaction conditions on grafting characteristics, it was found that the optimum concentration of peroxymonosulphate, mercaptosuccinic acid, hydrogen ion, acrylamide and guar gum for maximum % of grafting were 8.0×10 -3 , 3.2×10 -3 , 8.0×10 -3 , 16.0×10 -2 mol dm -3 and 60.0×10 -2 g dm -3 respectively. The optimum time duration and temperature of reaction were found to be 120 min and 40 °C respectively. During the study [H + ] variation showed prompt changes on grafting characteristics. It was found that after 310 °C the polyacrylamide grafted guar gum was thermally more stable than pure guar gum.

Sustainable Approach for Developing Graphene-Based Materials from Natural Resources and Biowastes for Electronic Applications

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Synthesis and Characterization of Acrylic Acid-g-(-Carrageenan) Copolymer and Study of Its Application

“…Free radical initiated graft copolymerization provides green and efficient approach for removing the drawback of easier susceptibility of microbial attack due to use of water, which is an easily decomposable oxidant and reductant and needs fairly lower temperature than any other radical initiated polymerization process like ATRP, RAFT, NMP, and so forth, which are generally carried out in nonaqueous media. Up to date many investigations were carried out on graft copolymerization reactions in view of preparing biopolymers-based materials [19][20][21][22][23]. A Few recent reports highlighted the grafting of -carrageenan with vinyl monomers [24][25][26][27][28][29][30], but no report showed the effect of grafting on gelation of carrageenan.…”

RAFT polymerization of N‐vinyl pyrrolidone using prop‐2‐ynyl morpholine‐4‐carbodithioate as a new chain transfer agent

“…Before the invention of controlled radical polymerization, the vinyl monomers were polymerized through conventional (redox) free radical polymerization process to prepare copolymers5, 6 and homopolymers. Conventional free radical polymerization has some drawbacks such as high molar mass dispersity, formation of side products, and uncontrollability of reaction.…”