Different Cobalt Complexes in Methyl Acrylate Controlled/ Living Radical Polymerization
| Autor: | Lee, Ming Han, 李明翰 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 Cobalt mediated radical polymerization (CMRP) of methyl acrylate was performed with CoII(salen), CoII(H2O)2(dmgBF2)2, CoII(salen-NO2), and CoII(salen-OMe) at 60 °C and its CoII/CoIII equilibrium constant have been measured by using UV-vis spectroscopy to determine the concentration of cobalt species ([CoII] and [CoIII-P]) and the first order kinetic plots to obtain the radical concentration ([P•]). With the increasing information of Keq values in different CMRP systems, a linear correlation between the CoII/CoIII reduction potential (E1/2) and log(Keq) was discovered. The connection of reduction potential, equilibrium constant, and control mechanism would contribute to the understanding of CMRP process. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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