https://scholars.lib.ntu.edu.tw/handle/123456789/623898
標題: | Reversible-deactivation radical polymerization of vinyl acetate mediated by tralen, an organomediator | 作者: | Chang C.-W. Jen Y.-Y. Tang S.-C. Zhang P. Chen C. CHI-HOW PENG |
公開日期: | 2021 | 卷: | 12 | 期: | 36 | 起(迄)頁: | 5159-5167 | 來源出版物: | Polymer Chemistry | 摘要: | 2,2??(1,2-Phenylenebis(azanediyl))bis(cyclohepta-2,4,6-trien-1-one) (tralen), an organic compound with only C, H, O, and N atoms, was utilized to control the radical polymerization of vinyl acetate (VAc), in which the living character of the molecular weight not only increasing linearly with the conversion but also matching the theoretical values, and the capability of chain extension were observed. Tralen is also effective at the mediation of reversible-deactivation radical polymerization (RDRP) of methyl acrylate (MA), acrylonitrile (AN), and N-vinyl pyrrolidone (NVP). The formation of PVAc-b-PNVP block copolymers further demonstrated the versatility of this tralen mediated radical polymerization. The mechanism study based on the MALDI-TOF, NMR, and EPR spectra of the PVAc products as well as the control studies of VAc polymerization mediated by tropone and aniline indicated that tralen forms bonds with the propagating radical by supposedly using the oxygen on the 7-membered ring to form the dormant species, which shows the single electron property and could reversibly dissociate to the PVAc radical and tralen to complete the cycle that controls the polymerization. ? 2021 The Royal Society of Chemistry. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116001206&doi=10.1039%2fd1py00904d&partnerID=40&md5=d6c038720d10356f6c091c42acf26aab https://scholars.lib.ntu.edu.tw/handle/123456789/623898 |
DOI: | 10.1039/d1py00904d | SDG/關鍵字: | Acrylic monomers;Aniline;Block copolymers;Electron spin resonance spectroscopy;Polyvinyl acetates;Block co polymers;Chain-extension;MALDI-TOF;Matchings;Mechanism studies;Methyl acrylates;N-vinyl pyrrolidone;Theoretical values;TOF spectrum;Vinyl acetates;Atom transfer radical polymerization |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。