Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (9): 941.

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13C NMR Studies on the Monomer Reactivity Ratios of Various Species in Anionic Styrene-Butadiene Gopolymerization

Yu Kesi1, Ying Shengkang1, Yu Huaigen2   

  1. 1. East China Vniversity of Chemical Technology, Shanghai;
    2. Shanghai Institute of Fluoro-Organic Materials
  • Received:1986-12-10 Online:1988-09-24 Published:1988-09-24

Abstract: By using the 13CNMR experimental data, the monomer reactivity ratios of various reactive species in the n-BuLi-THFinitiated butadienestyrene copolymeriza-tion system were evaluated. The results are in good agreement with the data obtained from the kinetic studies. Markobium mechanism of this anionic polymerization is discussed. Furthermore, the diad composition of copolymer at high conversion have been explored by integration.

Key words: NMR, Butadiene, Styrene, Anionic polymerization, Copolymerization

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