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|Title:||Gamma-radiation induced graft copolymerization of vinyl monomer onto rayon|
|Authors:||Misra, B N|
|Keywords:||Gamma-radiation;Graft copolymerization;Methyl acrylate;Mutual grafting;Rayon|
|Abstract:||Methyl acrylate (MA) has been graft copolymerized onto rayon in aqueous medium by using gamma-radiation as initiator in air by the mutual method. The graft yield has been determined as a function of different reaction parameters such as total dose, concentration of vinyl monomer and amount of water. The maximum grafting occurred at a total dose of 1.05 M rad using [MA] = 1.1 x 10-2 mol under optimum conditions. Grafting has also been studied in the presence of ferrous ammonium sulphate (FAS) as an additive. In presence of FAS, the maximum grafting occurred at a total dose of 0.35 M rad at [MA] = 1.1 x 10-2 mol using [FAS] = 1.9 x 10-4 mol. The amount of water also influences the grafting and maximum grafting was obtained using 15 ml water in presence of FAS and 10 ml in absence of FAS. The effect of methanol on grafting has also been studied. In all the experiments, 100 mg rayon was used. Rayon-g-poly(methyl acrylate) has been characterized by IR spectroscopy and thermogravimetric analysis.|
|ISSN:||0975-1025 (Online); 0971-0426 (Print)|
|Appears in Collections:||IJFTR Vol.17(3) [September 1992]|
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