Analysis of the reaction mechanism of the thiol-epoxy addition initiated by nucleophilic tertiary amines
| Autor: | Xavier Fernández-Francos, Ali Osman Konuray, Xavier Ramis |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Reaction mechanism
Diglycidyl ether Polymers and Plastics Kinetics Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Biochemistry Reaction rate chemistry.chemical_compound Nucleophile Polymer chemistry Trimethylolpropane Curing (chemistry) Organic Chemistry Cinètica química Epoxy 021001 nanoscience & nanotechnology 0104 chemical sciences Chemical kinetics Enginyeria química::Química física::Cinètica [Àrees temàtiques de la UPC] chemistry visual_art visual_art.visual_art_medium 0210 nano-technology Enginyeria química::Química física [Àrees temàtiques de la UPC] |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| DOI: | 10.1039/c7py01263b |
| Popis: | A kinetic model for thiol–epoxy crosslinking initiated by tertiary amines has been proposed. The kinetic model is based on mechanistic considerations and it features the effect of the initiator, hydroxyl content, and thiol–epoxy ratios. The results of the kinetic model have been compared with data from the curing of off-stoichiometric formulations of diglycidyl ether of bisphenol A (DGEBA) crosslinked with trimethylolpropane tris(3-mercaptopropionate) (S3) using 1-methylimidazole (1MI) as the initiator. The model has been validated by fitting the kinetic parameters to the experimental data under a variety of reaction conditions. In spite of the experimental uncertainty and model assumptions, the main features of the curing kinetics are correctly described and the reaction rates are quantitatively reproduced. |
| Databáze: | OpenAIRE |
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