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

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

Papers | Updated：2021-06-21

- REACTIVITY RATIOS FOR COPOLYMERIZATION WITH THE PARTICIPATION OF A CHARGE-TRANSFER COMPLEX
- Vol. 18, Issue 5, Pages: 423-430(2000)
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- Published：20 October 2000
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REACTIVITY RATIOS FOR COPOLYMERIZATION WITH THE PARTICIPATION OF A CHARGE-TRANSFER COMPLEX[J]. 2000, 18(5): 423-430.
DOI：

REACTIVITY RATIOS FOR COPOLYMERIZATION WITH THE PARTICIPATION OF A CHARGE-TRANSFER COMPLEX[J]. 2000, 18(5): 423-430. DOI：

摘要

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

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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