Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (8): 1485-1489. Previous Articles     Next Articles

Original Articles

梳型接枝共聚物的合成(IV)-氯乙酸降冰片烯甲酯引发苯乙烯、甲基丙烯酸甲酯原子转移自由基聚合的研究

李永胜;李弘;何炳林   

  1. 南开大学高分子化学研究所.天津(300071)
  • 发布日期:2002-08-15

Atom Transfer Radical Polymerization of Styrene and Methyl Methacrylate Initiated by 5-Norborn-2-enyl Methyl Chloroacetate

Li Yongsheng;Li Hong;He Binglin   

  1. State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation, Institute of Polymer Chemistry, Nankai University.Tianjin(300071)
  • Published:2002-08-15

Atom transfer radical polymerization (ATRP) of styrene (S) and methyl methacrylate (MMA) initiated by 5-norborn-2-enyl methyl chloroacetate (NMCA) is reported for the first time. The variation of monomer conversion with reaction time and that of molecular weight with monomer conversion were investigated in detail. Experimental results show that the molecular weight distribution (MWD) of the product of ATRP of MMA initiated by NMCA is pretty broad (PDI = 1.80 ~ 2.45) and the deviation of the value of MW detected (GPC) from that of the calculated is pretty large. While ATRP of styrene showing the characteristics of living polymerization, the MWD of the product is narrow (PDI = 1.54), the value of MW detected is in good accordance with that of the calculated, both the variation of monomer conversion with time and MW of the polymer with monomer conversion show a linear relationship. NMR characterization of the synthesized products shows that the double bond in the norbornene rig of the product polymers is not affected by the ATRP conducted.

Key words: FREE REDICAL POLYMERIZATION, STYRENE, METHYLMETHACRYLATE, NMR SPECTROMETRY

CLC Number: