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Citation: Dai Lizong, Zou Yousi, Yao Qingqing, Pan Ronghua. Study on Group Transfer Block Copolymerization[J]. Chinese Journal of Applied Chemistry, ;1997, 14(5): 23-27. shu

Study on Group Transfer Block Copolymerization

1.
Department of Chemistry, Xiamen University, Xiamen 361005

Received Date: 4 December 1996
Available Online: 3 July 1997
Fund Project:

The group transfer block copolymerization of methyl-methacrylate(MMA) and C_7~9 methacrylate(C_7~9 MA) has been studied by using a bifunctional initiator and an anionic catalyst. The influences of temperature、monomer sequence、concentration ratio of initiator to catalyst and concentration of monomers have been investigated. When T₁=85℃, T₂=25℃,[I]=1.35×10^-2 mol/L,[Cat]/[I]=0.126, C_7~9 MA as first monomer, the block copolymerization of C_7~9 MA and MMA appeared to be predominate. The thermal deformation temperatures of the copolymers obtained are reported. The triblock copolymer (PMMA-PC_7~9 MA-PMMA) has been characteriaced by FT-IR, ¹H NMR, and GPC as a homogeneous phase system.
- group transfer polymerization,
- block copolymerization,
- methacrylate
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