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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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Sanz, Alejandro
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Topics
Publications (6/6 displayed)
- 2022Relaxation Dynamics of Biomass-Derived Copolymers With Promising Gas-Barrier Propertiescitations
- 2018High-pressure cell for simultaneous dielectric and neutron spectroscopycitations
- 2017Coupling between Molecular Mobility and Kinetics of Crystal Growth in a Hydrogen-Bonded Liquidcitations
- 2013Chain arrangement and glass transition temperature variations in polymer nanoparticles under 3D-confinementcitations
- 2013Towards homogeneous dynamics in incompatible blends by selective transesterificationcitations
- 2010Influence of Fragility on Polymer Cold Crystallizationcitations
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article
Relaxation Dynamics of Biomass-Derived Copolymers With Promising Gas-Barrier Properties
Abstract
<jats:p>This article presents an experimental study on the relaxation dynamics of a series of random copolymers based on bio-friendly comonomers with interesting gas barrier properties. We analyze the relaxation response in the glassy and ultraviscous regime of poly (trimethylene furanoate/sebacate) random copolymers via dielectric spectroscopy. We report lower values of dynamic fragility [a dimensionless index introduced in 1985 (Angell, Relaxations in Complex Systems, 1985)] in comparison to popular polyesters widely used in industry, such as poly (ethylene terephthalate), suggesting that the amorphous phase of these furanoate-based polyesters adopt an efficient chain packing. This is consistent with their low permeability to gases. We also discuss on different equations (phenomenological and theory-based approaches) for fitting the temperature-evolution of the alpha relaxation time.</jats:p>