Development of Copolyamide-66/6 Cross-Linked Foams by a One-Step Reactive Extrusion Process
| Autor: | Adrien Tauleigne, Véronique Bounor-Legaré, Jihane Sahyoun, N. Garois, Fernande Da Cruz-Boisson, Philippe Cassagnau, Aurélie Vanhille Bergeron, Mathilde Auclerc |
|---|---|
| Přispěvatelé: | Ingénierie des Matériaux Polymères (IMP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Total Research & Technology Center Feluy, TOTAL S.A., Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Hutchinson Polymers, Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering Carboxylic acid Plastics extrusion One-Step 02 engineering and technology Reactive extrusion 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering chemistry.chemical_compound [CHIM]Chemical Sciences Bifunctional ComputingMilieux_MISCELLANEOUS Coalescence (physics) chemistry.chemical_classification Ethanol General Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences [CHIM.POLY]Chemical Sciences/Polymers chemistry Chemical engineering Polyamide 0210 nano-technology |
| Zdroj: | Industrial and engineering chemistry research Industrial and engineering chemistry research, American Chemical Society, 2019, 58 (27), pp.11750-11762. ⟨10.1021/acs.iecr.9b00312⟩ |
| ISSN: | 0888-5885 1520-5045 |
| DOI: | 10.1021/acs.iecr.9b00312⟩ |
| Popis: | The simultaneous chemical cross-linking and foaming of aliphatic copolyamide by one-step reactive extrusion using a bifunctional trialkoxysilaneimidazoline additive is studied. The aim was to reach efficient melt strength enhancing the cell growth without coalescence. From liquid NMR analyses, the cross-linked foam synthesis was evidenced resulting from both imidazoline ring opening (further reacting with the polyamide carboxylic acid end-groups) and alkoxysilane hydrolysis–condensation reactions (leading to cross-linking reaction and ethanol formation). From these chemical modifications, ethanol concomitantly released lead to the expansion of the cross-linked copolyamide. From the knowledge of this chemical mechanism, various extruder and formulation parameters have been modified and their impact scrutinized to optimize the foam morphology. With our optimized conditions, it was possible to synthesize rigid foam with mean pore size mainly below 90 μm and a density around 0.36 kg·m–3 while reaching reasona... |
| Databáze: | OpenAIRE |
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