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
Abstract
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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