Skip to Main content Skip to Navigation
Journal articles

Confinement and distribution of the composition in semicrystalline/amorphous miscible blends of PEKK/PEI: a calorimetry study

Abstract : 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.
Document type :
Journal articles
Complete list of metadata

https://hal-espci.archives-ouvertes.fr/hal-03324936
Contributor : Bibliothèque Espci <>
Submitted on : Tuesday, August 24, 2021 - 10:52:04 AM
Last modification on : Thursday, August 26, 2021 - 3:14:04 AM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2022-08-24

Please log in to resquest access to the document

Identifiers

Citation

Aude Belguise, Sabine Cantournet, Victor Fabre, Karine Le Gorju, Valérie Gaucher, et al.. Confinement and distribution of the composition in semicrystalline/amorphous miscible blends of PEKK/PEI: a calorimetry study. Macromolecules, American Chemical Society, 2021, 54 (16), pp.7364-7376. ⟨10.1021/acs.macromol.1c00344⟩. ⟨hal-03324936⟩

Share

Metrics

Record views

18