Citation: . REACTIVITY RATIOS FOR COPOLYMERIZATION WITH THE PARTICIPATION OF A CHARGE-TRANSFER COMPLEX[J]. Chinese Journal of Polymer Science, ;2000, 18(5): 423-430. shu

REACTIVITY RATIOS FOR COPOLYMERIZATION WITH THE PARTICIPATION OF A CHARGE-TRANSFER COMPLEX

Received Date: 2 November 1999

The complexation between styrene (St) and N-phenylmaleimide (PMI) was investigated by 1H-NMR spectroscopy,and the existence of a complex was proved. The equilibrium constant of St/PMI in chloroform at 50℃ was determined to be0.27. New elementary propagation reactions were proposed. On the basis of the propagation elementary reactions forcopolymerization with the participation of a charge-transfer complex (CTC), a method for measuring the reactivity ratios ispresented. Four reactivity ratios and relative reactivities of free monomer and CTC were obtained.They are γ21=0.012,γ1c=0.0030,γ2c=0.0034,and k1c/k12=11.34,k2c/k21=3.42
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