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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Delbreilh, Laurent
University of Rouen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Highlighting the interdependence between volumetric contribution of fragility and cooperativity for polymeric segmental relaxationcitations
- 2023Effect of physical and chemical ageing on barrier properties of epoxy coatingcitations
- 2023Effect of Chemical Composition on Molecular Mobility and Phase Coupling in Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) with Different Comonomer Contentscitations
- 2023Post‐curing and structural relaxation of epoxy networks during early stages of aging for civil engineering applicationscitations
- 2022Segmental Relaxation Dynamics in Amorphous Polylactide Exposed to UV Lightcitations
- 2022Macromolecular Mobility Changes Induced by Thermal Aging of Epoxy‐amine Polymer Networkscitations
- 2021Water-Induced Breaking of Interfacial Cohesiveness in a Poly(lactic acid)/Miscanthus Fibers Biocompositecitations
- 2019Determination of the equilibrium enthalpy of melting of two-phase semi-crystalline polymers by fast scanning calorimetrycitations
- 2019Polymer additive manufacturing of ABS structure: Influence of printing direction on mechanical propertiescitations
- 2019Cooperativity Scaling and Free Volume in Plasticized Polylactidecitations
- 2018Relaxation dynamics in plasticized polylactidecitations
- 2016Rock permittivity characterization and application of electromagnetic mixing models for density/compactness assessment of HMA by means of step‐frequency radarcitations
- 2016Molecular Relaxations in Supercooled Liquid and Glassy States of Amorphous Quinidine: Dielectric Spectroscopy and Density Functional Theory Approachescitations
- 2015Molecular mobility and physical ageing of plasticized poly(lactide)citations
- 2015Segmental mobility and glass transition of poly(ethylene-vinyl acetate) copolymers : Is there a continuum in the dynamic glass transitions from PVAc to PE?citations
- 2013Development of poly(isobutylene-co-isoprene)/reduced graphene oxide nanocomposites for barrier, dielectric and sensingapplicationscitations
- 2012Study of the cooperativity at the glass transition temperature in PC/PMMA multilayered films: Influence of thickness reduction from macro- to nanoscalecitations
- 2007Study of poly(bisphenol A carbonate) relaxation kinetics at the glass transition temperaturecitations
- 2005Effect of macromolecular orientation on the structural relaxation mechanisms of poly(ethylene terephthalate)citations
Places of action
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article
Macromolecular Mobility Changes Induced by Thermal Aging of Epoxy‐amine Polymer Networks
Abstract
International audience ; Changes in macromolecular mobility during the thermal oxidation of epoxy-amine thermoset networks are addressed in this study. Three epoxy-amine systems, cured with DGEBA and three similar aliphatic hardeners – ethylenediamine (EDA), diethylenetriamine (DETA), and triethylenetetramine (TETA) – aged at 160°C are characterized by dynamic mechanical analysis (DMA). Results show a split of the single initial α relaxation peak with aging, which may imply that chain scissions are preferred at certain oxidizable sites in the network. A β relaxation can be identified around -60°C and does not seem to evolve much with aging, while another sub-glass transition around 30°C decreases with it. Implications of this work both with mechanical fracture properties and with segmental mobility of radical chemical functions involved in bimolecular oxidation reactions have yet to be confirmed.