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(Photo) graft copolymerization of methyl methacrylate (MMA) on polyamine-modified oxycellulose in a limited aqueous system

โœ Scribed by Premamoy Ghosh; Arup Ratan Bandyopadhyay

Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
431 KB
Volume
31
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Graft copolymerization of methyl methacrylate (MMA) on oxycellulose modified with a polyamine [diethylene triamine (DETA)] was studied in a limited aqueous system under phctoactivation in visible light using K2S208 as the initiator. No polymerization was observed in the dark or in presence of light in 80 min in the case of DETA-treated cellulose; however, ready graft copolymerization resulting in high percent grafting and grafting efficiencies took place in the case of DETA-modified oxycellulose system under photoactivated conditions. DETA-modified oxycellulose prepared from oxycellulose corresponding to low degrees of oxidation (copper nos. 1.5-3.5) produced optimum grafting. The grafting parameters under different sets of conditions were studied and compared, and the mechanism of graft copolymerization was discussed.

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