2D-infrared thermography monitoring of ultrasound-assisted polymerization of water-soluble monomer in a gel process
| Autor: | Francis Ehrenfeld, Julien Rigolini, Kamal El Omari, Yves Le Guer, Florine Bombled, Bruno Grassl |
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| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Conseil General d’Aquitaine |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Exothermic reaction
Materials science Polymers and Plastics Bulk polymerization Polymers Exothermic polymerization reaction 02 engineering and technology macromolecular substances Thermography (temperature measurement) 010402 general chemistry Photochemistry 01 natural sciences Water soluble monomers Thermal propagation Polymerization Inorganic Chemistry chemistry.chemical_compound Materials Chemistry [CHIM]Chemical Sciences Ultrasonics High concentration chemistry.chemical_classification Molar mass Polymerization process Organic Chemistry Monomers technology industry and agriculture Frontal polymerization Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Monomer chemistry Thermography (imaging) Thermography Molar mass distribution Gel process 0210 nano-technology Gels Reaction front |
| Zdroj: | Macromolecules Macromolecules, American Chemical Society, 2011, 44 (11), pp.4462-4469. ⟨10.1021/ma200706j⟩ |
| ISSN: | 0024-9297 1520-5835 |
| Popis: | cited By 4; International audience; This paper describes a process based on the ultrasound-assisted polymerization of a water-soluble monomer at a high concentration, which is known as a gel polymerization process. Polymerization is triggered by the ultrasound-assisted decomposition of the initiating species. This highly exothermic polymerization reaction can sustain a localized reaction front that propagates throughout an unstirred medium, as in frontal polymerization. Evidence for the controlled nature of thermal propagation alongside a gel process is presented by online 2D-infrared (IR) thermography monitoring. In addition, the effects of thermal propagation on the molar mass distributions are described. Specifically, the use of ultrasound not only suppresses the so-called "fingering" of frontal polymerization but also avoids any alteration of the molar mass distribution of the polymer. |
| Databáze: | OpenAIRE |
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