Abstract
Graft copolymerization of methyl methacrylate onto cellulose samples, whose reducing end group C1-C2 glycol had been oxidized, was carried out by using an aqueous solution of Ce (NO3)6 2NH4 as the initiator in the absence of mineral acid. The elimination of C1-C2 glycol did not inhibit the graft copolymerization but lowered the percentage of grafting. This result implies that both C1-C2 glycol and C2-C3 glycol acted as grafting sites and the function of C2-C3 glycol as grafting sites was inferior to that of C1-C2 glycol. Under a condition that redox reaction between cellulose and ceric ion could hardly proceed a large amount of homo poly (methyl methacrylate) (PMMA) was formed in the cellulose matrix. Truly grafted PMMA side-chains were isolated from graft products by using a combined technique of thin-layer chromatography and hydrolysis of cellulose backbone. This technique was not so valid as in the case of styrene/cellulose graft copolymerization.
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