Citation:
CHANG HUNG-TSE, VOONG SING-TUH. STUDIES ON CYCLO-COPOLYMERIZATION——COMPOSITION EQUATION AND REACTIVITY RATIOS OF SYMMETRICAL NONCONJUGATE DIENE AND VINYL MONOMER COPOLYMERIZATION[J]. Acta Polymerica Sinica,
;1965, 7(6): 448-456.
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By considering characteristics of cydo—copolymerization,the composition equation at low conversion was derived in the following form:where [M] and [B] represent the concentrations of diene and the vinyl monomer respec-tively,[M]cop and [B]cop the concentrations of diene and vinyl segment in the copolymer,and R1 and R2 represent the relative reactivity ratio of diene and vinyl monomer respec-tively.When [M]=[B],then R1 becomes the rate ratio of radical M·or m·attacking diene (including monomolecular and bimolecular mechanism) and vinyl monomer;and R2 becomes the rate ratio of radical B attacking vinyl monomer and diene (including two kinds of mechanism).By ap-piing the above equation,values of R1 and R2 for 12 sets of monomer pairs were obtained and found to be rather the best values with a permissible range of error.
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