Photo-Induced atom transfer radical polymerization with nanosized α-Fe2O3as photoinitiator
| Autor: | Yi-Xue Xu, Chang-An Yang, Mang Lu, Li-Chao Liu, Guo-Xiang Wang, Xian-Lei Li, Zhao-Hui Hou, Enxiang Liang, Hu Wu |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Polymers and Plastics Atom-transfer radical-polymerization Radical polymerization Chain transfer General Chemistry Photochemistry Surfaces Coatings and Films Living free-radical polymerization Photopolymer Polymerization Polymer chemistry Materials Chemistry Reversible addition−fragmentation chain-transfer polymerization Ionic polymerization |
| Zdroj: | Journal of Applied Polymer Science. 132 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.42389 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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