Photo‐induced graft copolymerization. XV. Graft copolymerization of methyl methacrylate onto nylon‐6 using erythrosin as photoinitiator

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The photo‐induced graft copolymerization of methyl methacrylate onto nylon‐6 was investigated using erythrosin as the photoinitiator. The systems were buffered with phosphate citrate buffer (Na2HPO4/citric acid). The graft copolymerization was carried out within the temperature range of 35–50°C and from the corresponding Arrhenius plot, the energy of activation was evaluated. The effect of monomer, initiator, ascorbic acid, etc. on the graft yield has been investigated. Further, the effect of solvent on the rate of grafting has been investigated and the chain transfer constant (Cs) of the solvent has been evaluated. The kinetic data and other events indicate that the overall polymerization takes place by a radical mechanism. A suitable mechanism has been suggested and rate expressions have been derived.