Inside Cover: Control of the Termination Mechanism in Radical Polymerization by Viscosity: Selective Disproportionation in Viscous Media (Chem. Eur. J. 6/2017)

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• 作者：Dr. Yasuyuki Nakamura ; Tasuku Ogihara ; Dr. Sayaka Hatano ; Prof. Manabu Abe and Prof. Shigeru Yamago
• 刊名：Chemistry - A European Journal
• 出版年：2017
• 出版时间：January 26, 2017
• 年：2017
• 卷：23
• 期：6
• 页码：1208
• 全文大小：2676K
• ISSN：1521-3765

文摘

The effects of temperature and viscosity on the termination mechanism of radical polymerization, that is, disproportionation versus combination of polymer chain-end radicals, are unambiguously clarified. The disproportiontion significantly increases with increasing viscosity of the reaction medium by lowering temperature or changing solvents. Control of the termination reaction is achieved for the first time; the polystyrene chain-end radical terminates by combination in non-viscous solvents but by disproportionation in viscous media. More information can be found in the Full Paper by S. Yamago et al. on page 1299 ff.