Photoinduced ICAR ATRP of Methyl Methacrylate with AIBN as Photoinitiator
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The initiators for continuous activator regeneration atom transfer radical polymerization (ICAR ATRP) of methyl methacrylate (MMA) was successfully carried out in N,N-dimethyl formamide (DMF) at ambient temperature under irradiation with N,N,N′,N′-tetramethyl–1,2-ethanediamine (TMEDA) as ligand, azobisisobutyronitrile (AIBN) as photoinitiator, and CCl4 as initiator. The polymerization obeyed the first-order kinetics. Linear increase of the molecular weight distribution (MWD) with monomer conversion and narrow molecular weight distribution were observed. The polymerization proceeded in a living fashion at 15 °C. The apparent activation energy (Eapp) of 27.23 kJ/mol was obtained based on the slope of the plot of ln (kapp) versus (1/T) and the enthalpy (∆Heq 0) was 5.08 kJ/mol. The polymerization was controlled by periodic light on-off. The living character of polymerization was further demonstrated by chain extension with the resulting PMMA-Cl as macrointiator.
KeywordsICAR ATRP Photoinitiated Methyl methacrylate ATRP Catalyst Living polymerization
The authors are grateful for the financial support by Scientific Research Fund of Hunan Provincial Education Department (Nos. 13A031 and 13C364), the Science and Technology Planning Project of Hunan Province, China (Nos. 2012FJ4272), the National Natural Science Foundation of China (No.51374043), and the Open Foundation of Fine Petrochemical Catalytic and Separating Key Laboratory of Hunan Province.
- 7.Mirshafiei-Langari S-A, haddadi-Asl V, Roghani-Mamaqani H, Sobani M, Khezri K (2013) J Polym Res 20:163Google Scholar