EPR Investigations into the Kinetics of Trithiocarbonate-Mediated RAFT-Polymerization of Butyl Acrylate
In: Macromolecular chemistry and physics (Print), Jg. 214 (2013), Heft 18, S. 2108-2114
Online
academicJournal
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Zugriff:
Electron paramagnetic resonance (EPR) spectroscopy is used for measuring rate coefficients of addition, kad, and fragmentation, kβ, together with the associated equilibrium constants, Keq, for butyl acrylate polymerizations mediated by S-ethyl propan-2-ylonate-S'-propyl trithiocarbonate (EPPT) and by S-S'-bis(methyl-2-propionate) trithiocarbonate (BMPT). Experiments at ―40 °C yield kad = (3.4 ± 0.3) × 106 L mol―1 s―1, kβ = (1.4 ± 0.4) x 102 s―1, and Keq = (2.6 ± 0.8) x 104 L mol―1 for EPPT and kad = (4.1 ± 0.9) × 106 L mol―1 s―1, kβ = (4.5 ± 0.5) x 101 s―1, and Keq = (8 ± 4) × 104 L mol―1 for BMPT. The Keq values are in satisfactory agreement with data from ab initio calculations.
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EPR Investigations into the Kinetics of Trithiocarbonate-Mediated RAFT-Polymerization of Butyl Acrylate
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Autor/in / Beteiligte Person: | MEISER, Wibke ; BUBACK, Michael ; SIDORUK, Alana |
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Zeitschrift: | Macromolecular chemistry and physics (Print), Jg. 214 (2013), Heft 18, S. 2108-2114 |
Veröffentlichung: | Weinheim: Wiley, 2013 |
Medientyp: | academicJournal |
Umfang: | print, 20 ref |
ISSN: | 1022-1352 (print) |
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