The Effect of Intramolecular Transfer to Polymer on Stationary Free-Radical Polymerization of Alkyl Acrylates, 3 - Consideration of Solution Polymerization up to High Conversions
| Autor: | Christopher Bruni, Robin A. Hutchinson, John R. Richards, Anatoly N. Nikitin, George A. Kalfas |
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| Rok vydání: | 2009 |
| Předmět: |
Arrhenius equation
Polymers and Plastics 010405 organic chemistry Chemistry Organic Chemistry Radical polymerization Solution polymerization Chain transfer 010402 general chemistry Condensed Matter Physics Branching (polymer chemistry) 01 natural sciences 0104 chemical sciences Inorganic Chemistry symbols.namesake Reaction rate constant Polymerization Intramolecular force Polymer chemistry Materials Chemistry symbols Physical chemistry |
| Zdroj: | Macromolecular Theory and Simulations. 18:247-258 |
| ISSN: | 1022-1344 |
| DOI: | 10.1002/mats.200900009 |
| Popis: | The kinetics of butyl acrylate solution polymerization up to high conversion are studied both experimentally and theoretically. New expressions taking into account both inter- and intramolecular transfer to polymer are derived for polymerization rate, average chain-length and branching level. These expressions are used for comparative analysis of these two chain transfer events and for evaluation of the backbiting rate coefficient, k bb , and the constant of chain transfer to solvent (xylene), C trS . Using batch experiments performed at 50, 60 and 70 °C, the Arrhenius parameters for k bb and C trS are estimated to be, respectively, A(k bb ) = (7.4 ± 1.5) x 10 7 s -1 , E a (k bb ) = (32.7±0.5) kJ. mol -1 and A(C trS )= 10.5 ±3.5, E a (C trS ) = (26.9 ± 1.9) kJ. mol -1 . |
| Databáze: | OpenAIRE |
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