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高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (1): 159-165.doi: 10.1007/s40242-013-2058-2

• Articles • 上一篇    下一篇

Kinetics of Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by Cellulose Chloroacetate in BMIMCl

LIN Chun-xiang1, ZHAN Huai-yu2, LIU Ming-hua1, FU Shi-yu2, LUCIA Lucian2,3   

  1. 1. College of Environment & Resources, Fuzhou University, Fuzhou 350002, P. R. China;
    2. State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, P. R. China;
    3. Laboratory of Soft Materials & Green Chemistry, Department of Wood & Paper Science, North Carolina State University, Raleigh 27695-8005, USA
  • 收稿日期:2012-02-17 修回日期:2012-05-18 出版日期:2013-02-01 发布日期:2013-01-23
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.21077024), the Natural Science Foundation of Fujian Province, China(No.2011J05026) and the Initial Funding of Fuzhou University, China(No.0460022326).

Kinetics of Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by Cellulose Chloroacetate in BMIMCl

LIN Chun-xiang1, ZHAN Huai-yu2, LIU Ming-hua1, FU Shi-yu2, LUCIA Lucian2,3   

  1. 1. College of Environment & Resources, Fuzhou University, Fuzhou 350002, P. R. China;
    2. State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, P. R. China;
    3. Laboratory of Soft Materials & Green Chemistry, Department of Wood & Paper Science, North Carolina State University, Raleigh 27695-8005, USA
  • Received:2012-02-17 Revised:2012-05-18 Online:2013-02-01 Published:2013-01-23
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21077024), the Natural Science Foundation of Fujian Province, China(No.2011J05026) and the Initial Funding of Fuzhou University, China(No.0460022326).

摘要:

The kinetics of atom transfer radical polymerization(ATRP) of methyl methacrylate(MMA) initiated by cellulose based macroinitator, cellulose chloroacetate, performed in ionic liquid(1-N-butyl-3-methylimidazolium chloride, BMIMCl), dimethyl sulfoxide(DMSO) and dimethyl formamide(DMF) were respectively studied in detail. The polymerizations were carried out under homogeneous conditions with CuBr as catalyst and 2,2′-bipyridine(bpy) as ligand. The dependences of the rate of polymerization on solvent, temperature, monomer/initiator ratio and catalyst/ligand ratio were presented. Plots of ln([M]0/[M]t) vs. time and molecular weight vs. conversion showed a linear dependence, indicating a constant number of propagating species throughout the polymerization as well as a negligible contribution of termination or transfer reactions. On the basis of an Arrhenius plot, the apparent energy of activation(ΔEaapp) for ATRP of MMA in BMIMCl was 16.6 kJ/mol which is much lower than that in diphenyl ether.

关键词: Atom transfer radical polymerization(ATRP), Methyl methacrylate, Kinetics

Abstract:

The kinetics of atom transfer radical polymerization(ATRP) of methyl methacrylate(MMA) initiated by cellulose based macroinitator, cellulose chloroacetate, performed in ionic liquid(1-N-butyl-3-methylimidazolium chloride, BMIMCl), dimethyl sulfoxide(DMSO) and dimethyl formamide(DMF) were respectively studied in detail. The polymerizations were carried out under homogeneous conditions with CuBr as catalyst and 2,2′-bipyridine(bpy) as ligand. The dependences of the rate of polymerization on solvent, temperature, monomer/initiator ratio and catalyst/ligand ratio were presented. Plots of ln([M]0/[M]t) vs. time and molecular weight vs. conversion showed a linear dependence, indicating a constant number of propagating species throughout the polymerization as well as a negligible contribution of termination or transfer reactions. On the basis of an Arrhenius plot, the apparent energy of activation(ΔEaapp) for ATRP of MMA in BMIMCl was 16.6 kJ/mol which is much lower than that in diphenyl ether.

Key words: Atom transfer radical polymerization(ATRP), Methyl methacrylate, Kinetics