Photo‐Induced atom transfer radical polymerization with nanosized α‐Fe2O3 as photoinitiator |
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| Authors: | Li‐chao Liu Mang Lu Zhao‐Hui Hou Guo‐Xiang Wang Chang‐An Yang En‐Xiang Liang Hu Wu Xian‐Lei Li Yi‐Xue Xu |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan Province, China;2. School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi Province, China |
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| Abstract: | Photo‐induced atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was achieved in poly(ethylene glycol)‐400 with nanosized α‐Fe2O3 as photoinitiator. Well‐defined poly(methyl methacrylate) (PMMA) was synthesized in conjunction with ethyl 2‐bromoisobutyrate (EBiB) as ATRP initiator and FeCl3·6H2O/Triphenylphosphine (PPh3) as complex catalyst. The photo‐induced polymerization of MMA proceeded in a controlled/living fashion. The polymerization followed first‐order kinetics. The obtained PMMA had moderately controlled number‐average molecular weights in accordance with the theoretical number‐average molecular weights, as well as narrow molecular weight distributions (Mw/Mn). In addition, the polymerization could be well controlled by periodic light‐on–off processes. The resulting PMMA was characterized by 1H nuclear magnetic resonance and gel permeation chromatography. The brominated PMMA was used further as macroinitiator in the chain‐extension with MMA to verify the living nature of photo‐induced ATRP of MMA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42389. |
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| Keywords: | kinetics photopolymerization radical polymerization |
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