Hydrosilylation and dehydrocondensation reactions of methylhydridesiloxane to acrylic and methacrylic acids
| Autor: | Omari V. Mukbaniani, Tamara Tatrishvili, M. Labartkava, S. M. Meladze, N. Pirckheliani, G. E. Zaikov, Z. Pachulia |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Order of reaction
Polymers and Plastics Hydrosilylation chemistry.chemical_element Hydrochloric acid General Chemistry Degree of polymerization Surfaces Coatings and Films Reaction rate Gel permeation chromatography chemistry.chemical_compound chemistry Methacrylic acid Polymer chemistry Materials Chemistry Platinum |
| Zdroj: | Journal of Applied Polymer Science. 103:3243-3252 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.25387 |
| Popis: | The hydrosilylation of α,ω-bis(trimethylsiloxy) methylhydridesiloxane (degree of polymerization ≈ 53) with acrylic and methacrylic acid with various ratios of the initial compounds, in the presence of platinum hydrochloric acid, has been investigated. In the presence of platinum hydrochloric acid, competitive dehydrocondensation reactions take place with the formation of various oligomers with various chemical links. In the later stages of the reaction, three-dimensional systems have been obtained. During dehydrocondensation, the reaction order, reaction rate constants, and activation energy have been determined. The structures of the synthesized oligomers have been determined with IR and NMR spectroscopy data. Gel permeation chromatography, differential scanning calorimetry, and X-ray analyses of the synthesized oligomers have been carried out. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 3243–3252, 2007 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text