Template photopolymerization of methacrylic acid in water—IV. Determination of rate constants of elementary processes
| Autor: | Stefan Poklowiński, Jadwiga Matuszewska-Czerwik |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Aqueous solution
Polymers and Plastics Polyvinylpyrrolidone Organic Chemistry Kinetics technology industry and agriculture General Physics and Astronomy Solution polymerization macromolecular substances chemistry.chemical_compound Photopolymer Reaction rate constant Methacrylic acid chemistry Polymerization Polymer chemistry Materials Chemistry medicine medicine.drug |
| Zdroj: | European Polymer Journal. 27:1335-1337 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/0014-3057(91)90231-c |
| Popis: | Initiation rate for the polymerization of methacrylic acid in water, in the absence and in the presence of polyvinylpyrrolidone as a template, have been determined by the inhibition method. A water-soluble inhibitor (2,2,6,6-tetramethyl-4-hydroxy-piperidine-l-oxyl) was used. The rate constants for template propagation (kp) and termination (kt) were calculated and compared with the corresponding constants for non-template polymerization. It was found that kp and kt in the template polymerization are lower by several orders of magnitude that those in the polymerization without template. The mechanisms of elementary processes of the template polymerization are discussed. |
| Databáze: | OpenAIRE |
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