Grafting onto wool. XXIII. Graft copolymerization of methyl methacrylate by use of chromium acetyl acetonate–perchloric acid system: Effect of tertiary butyl hydroperoxide
- 1 January 1985
- journal article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 30 (1) , 135-141
- https://doi.org/10.1002/app.1985.070300110
Abstract
Methyl methacrylate (MMA) has been graft copolymerized onto Himachali wool in an aqueous medium by using chromium acetyl acetonate in the presence of perchloric acid at 45, 55, 65, and 75°C for various reaction periods. Percentage of grafting has been determined as functions of various reaction variables. Tertiary butyl hydroperoxide (TBHP) was found to influence grafting of MMA. Rate of grafting (Rp) and induction period (Ip) of MMA towards graft copolymerization were determined as function of total initial monomer concentrations. In the absence of TBHP, Rp does not change markedly with the increase in monomer concentration. When the graft copolymerization was carried out in the presence of TBHP, an increase in Rp and a decrease in Ip were observed.Keywords
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