| People | Locations | Statistics |
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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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Gac, Pierre Yves Le
Ifremer
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Changes in natural rubber mechanical behavior during oxidation: Relationship with oxygen consumptioncitations
- 2023Non-Arrhenian Hydrolysis of Polyethylene Terephthalate – a 5-year Long Aging Study Above and Below The Glass Transition Temperaturecitations
- 2022Hydrolytic degradation of biodegradable poly(butylene adipate-co-terephthalate) (PBAT) - Towards an understanding of microplastics fragmentationcitations
- 2022Chemical coupling between oxidation and hydrolysis in Polyamide 6 - A key aspect in the understanding of microplastic formationcitations
- 2022Fracture test to accelerate the prediction of polymer embrittlement during aging – Case of PET hydrolysiscitations
- 2022Enhanced thermo-oxidative stability of polydicyclopentadiene containing covalently bound nitroxide groups
- 2021Origin of embrittlement in Polyamide 6 induced by chemical degradations: mechanisms and governing factorscitations
- 2020Impact of thermal oxidation on mechanical behavior of polydicylopentadiene: Case of non-diffusion limited oxidationcitations
- 2020Multiscale study and kinetic modeling of PDCPD thermal oxidation
- 2020Influence of Seawater Ageing on Fracture of Carbon Fiber Reinforced Epoxy Composites for Ocean Engineeringcitations
- 2019Mechanical Behaviour of Composites Reinforced by Bamboo Strips, Influence of Seawater Agingcitations
- 2019Compréhension de la formation des Microplastiques : Impact de l’hydrolyse du polyamide 6 sur les propriétés à la rupture
- 2019Impact of hydrolytic degradation on mechanical properties of PET - Towards an understanding of microplastics formationcitations
- 2018Durability of Polymers and Composites: The Key to Reliable Marine Renewable Energy Productioncitations
- 2018Impact of fillers (short glass fibers and rubber) on the hydrolysis-induced embrittlement of polyamide 6.6citations
- 2017Yield stress changes induced by water in polyamide 6: Characterization and modelingcitations
- 2016Modelling the non Fickian water absorption in polyamide 6citations
- 2016Predictive ageing of elastomers: Oxidation driven modulus changes for polychloroprenecitations
- 2016Effect of sea water and humidity on the tensile and compressive properties of carbon-polyamide 6 laminatescitations
- 2016Fatigue resistance of natural rubber in seawater with comparison to aircitations
- 2015Water diffusivity in PA66: Experimental characterization and modeling based on free volume theorycitations
- 2011Degradation of rubber to metals bonds during its cathodic delamination, validation of an artificial ageing testcitations
Places of action
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article
Water diffusivity in PA66: Experimental characterization and modeling based on free volume theory
Abstract
Diffusion of water in polyamide 6.6 has been characterized for a wide range of temperatures (from 25 to 80 °C) and various humidities using dynamic vapor sorption machine. The decrease in glass transition temperature (Tg) has also been measured using DMA tests. As usually observed, PA66 absorbs a large amount of water (up to 5% at 90%RH) with a Fickian behavior with a diffusion coefficient that depends on water activity for all temperatures. Moreover, it appears that the diffusion coefficient for tests performed below Tg is almost independent of the water activity whereas a strong dependency is observed above Tg. This behavior is to be compared to a large decrease of Tg with the absorption of water. The increase of the water diffusion can therefore be related to a change of the amorphous phase (the crystalline phase is supposed to absorb no water) from the glassy to the rubbery states. A model based on the free volume theory is used successfully to describe the wide experimental database. It is therefore possible to describe the dependency of the water diffusion kinetics on both temperature and water uptake using the approach described in this paper.