Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (1): 159-165.doi: 10.1007/s40242-013-2058-2

Previous Articles     Next Articles

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).

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