Abstract
SYNOPSIS: The graft copolymerization of acrylamide monomer into polyethylene films was carried out by the preirradiation method. The influence of synthesis conditions, such as monomer concentration, preirradiation dose, reaction temperature, Mohr's salt, and pregrafting storage was investigated. The order of dependence of the rate of grafting on preirradiation dose and monomer concentration was found to be 0.87 and 1.86, respectively. An activation energy of 22.9 kJ/mol for the grafting reaction was obtained. The storage of preirradiated polyethylene film at −4°C prior to the reaction showed a decrease in the degree of grafting up to 10 days, beyond which the degree of grafting remained constant. The addition of FeSO4 in the grafting medium not only inhibits the homopolymerization of the monomer but also decreases the degree of grafting. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1331–1337, 2000
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