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Controlled polymerization of epoxides: Metal‐free ring‐opening polymerization of glycidyl phenyl ether initiated by tetra‐n‐butylammonium fluoride in the presence of protic compounds |
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| Authors: | Hisatoyo Morinaga Yusuke Ujihara Naho Yuto Daisuke Nagai Takeshi Endo |
| Institution: | 1. Department of Materials Science and Engineering, Kochi National College of Technology, 200‐1, Monobe otsu, Nankoku, Kochi 783‐8508, Japan;2. Advanced Course in Materials Science and Engineering, Kochi National College of Technology, 200‐1, Monobe otsu, Nankoku, Kochi 783‐8508, Japan;3. Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, 1‐5‐1 Tenjin‐cho, Kiryu, Gunma 376‐8515, Japan;4. Molecular Engineering Institute, Kinki University, 11‐6 Kayanomori, Iizuka, Fukuoka 820‐8555, Japan |
| Abstract: | Metal‐free controlled ring‐opening polymerization of glycidyl phenyl ether (GPE) was achieved using tetra‐n‐butylammonium fluoride (Bu4NF) as an initiator in the presence of water and ethanol as chain transfer agents (CTAs). Number‐averaged molecular weight of poly(GPE) increased with an increase of GPE]0/(Bu4NF]0 + CTA]0) values, showing relatively narrow molecular weight distributions. NMR spectroscopic analysis exhibited a formation of ethoxy groups as well as FCH2 at the initiating polymer chain‐end when ethanol was used as the CTA in the polymerization. These results indicate that Bu4NF acts as a catalyst as well as the initiator for this polymerization system. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
| Keywords: | anionic polymerizations controlled polymerizations epoxides metal‐free polymerizations oligomers ring‐opening polymerizations |