Confinement and Distribution of the ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Confinement and Distribution of the Composition in Semicrystalline/Amorphous Miscible Blends of PEKK/PEI: A Calorimetry Study
Author(s) :
Belguise, Aude [Auteur]
Cantournet, Sabine [Auteur]
Fabre, Victor [Auteur]
Le gorju, Karine [Auteur]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bresson, Bruno [Auteur]
Fretigny, Christian [Auteur]
Lequeux, François [Auteur]
Montes, Helene [Auteur]
Cantournet, Sabine [Auteur]
Fabre, Victor [Auteur]
Le gorju, Karine [Auteur]
Gaucher, Valerie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Tahon, Jean-Francois [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Bresson, Bruno [Auteur]
Fretigny, Christian [Auteur]
Lequeux, François [Auteur]
Montes, Helene [Auteur]
Journal title :
Macromolecules
Abbreviated title :
Macromolecules
Volume number :
54
Pages :
7364-7376
Publisher :
American Chemical Society (ACS)
Publication date :
2021-08-06
ISSN :
0024-9297
English keyword(s) :
Crystallization
Glass transition
Polyethylenimine
Quantum confinement
Phase transitions
Glass transition
Polyethylenimine
Quantum confinement
Phase transitions
HAL domain(s) :
Chimie/Polymères
Chimie
Chimie
English abstract : [en]
By combining small-angle X-ray scattering and differential scanning calorimetry measurements, we analyze the widening of the glass transition measured for miscible mixtures of semicrystalline PEKK chains and fully amorphous ...
Show more >By combining small-angle X-ray scattering and differential scanning calorimetry measurements, we analyze the widening of the glass transition measured for miscible mixtures of semicrystalline PEKK chains and fully amorphous PEI chains. The calorimetric analysis reveals that the amorphous interlamellar phase is subject to confinement effects. In addition, we measure wide composition distributions for the amorphous interlamellar and interfibrillar phases. We quantitatively identify, through careful analysis of the signals, the fraction and average composition of each amorphous phase and the composition distribution. We conclude that the final distribution of the polymer chains that do not crystallize in the interlamellar and interfibrillar phases results from the crystallization dynamics of the mixtures.Show less >
Show more >By combining small-angle X-ray scattering and differential scanning calorimetry measurements, we analyze the widening of the glass transition measured for miscible mixtures of semicrystalline PEKK chains and fully amorphous PEI chains. The calorimetric analysis reveals that the amorphous interlamellar phase is subject to confinement effects. In addition, we measure wide composition distributions for the amorphous interlamellar and interfibrillar phases. We quantitatively identify, through careful analysis of the signals, the fraction and average composition of each amorphous phase and the composition distribution. We conclude that the final distribution of the polymer chains that do not crystallize in the interlamellar and interfibrillar phases results from the crystallization dynamics of the mixtures.Show less >
Language :
Anglais
Peer reviewed article :
Oui
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
Université de Lille
CNRS
INRAE
ENSCL
CNRS
INRAE
ENSCL
Collections :
Research team(s) :
Ingénierie des Systèmes Polymères
Submission date :
2023-12-08T12:16:38Z
2023-12-08T16:04:03Z
2023-12-08T16:04:03Z
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