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- W2364295312 abstract "This paper reports: (1) the formation of peroxides and the subsequent initiation of polymerization during ~(60)Co γ-ray irradiation of vinyl monomers in the presence of O_2 and (2) the effect of radiation temperature on the rate of peroxide formation and on the initiation behaviour. The major results obtained are: (1) The formation of peroxides and the induced polymerization proceed by the free radical mechanism: v_0∝c~(1/2), v_c∝I~(1/2), G_R= 10. (2) The activation energy of peroxide formation, the apparent activation energy of polymerization and the activation energy of peroxides initiation produced by irradiation of vinyl monomers are: E_(f(MMA))=11, E_(f(St))=9.6, E_(f(AN)=8.5, E_(MMA)=E_(VA)=11.4, E_(1(MMA))=E_(1(va))=13kcal/mol. (3) The reaction rate of peroxides formation is increased and the initiation behavior of peroxides varies with increasing irradiation temperature. (4) The rate of decomposition of monomer peroxides is smoother than that of BPO during the polymerization and so a smooth kinetic progress is obtained. (5) the preirradiated monomer can induce another non-irradiated monomer to bring about copolymerization. The initiating ability of copolymerization of the preirradiation monomers depend mainly on the chemical structure of the monomers." @default.
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- W2364295312 date "1984-01-01" @default.
- W2364295312 modified "2023-09-25" @default.
- W2364295312 title "STUDY ON THE PREIRRADIATION POLYMERIZATION OF VINYL MONOMERS" @default.
- W2364295312 hasPublicationYear "1984" @default.
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