Photoinduced ICAR ATRP of Methyl Methacrylate with AIBN as Photoinitiator
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- 作者：Qing-Ling Zhao ; En-Hui Liu ; Guo-Xiang Wang ; Zhao-Hui Hou…
- 关键词：ICAR ATRP ; Photoinitiated ; Methyl methacrylate ; ATRP ; Catalyst ; Living polymerization
- 刊名：Journal of Polymer Research
- 出版年：2014
- 出版时间：May 2014
- 年：2014
- 卷：21
- 期：5
- 全文大小：440 KB
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- 刊物主题：Chemistry
Polymer Sciences
Industrial Chemistry and Chemical Engineering
Characterization and Evaluation Materials - 出版者：Springer Netherlands
- ISSN：1572-8935
文摘
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-,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.