Relaxation dynamics in plasticized polylactide - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Relaxation dynamics in plasticized polylactide

Nicolas Delpouve
Steven Araujo
Sandra Domenek
Laurent Delbreilh
Eric Dargent

Résumé

Polylactide has been plasticized with acetyl tributyl citrate at several degrees (0 to 13%), leading to a modification of the Van der Waals interactions between the macromolecules without damaging the covalent bonding. The decrease of the dynamic glass transition temperature with plasticizer content has been recorded from calorimetric measurements and dielectric relaxation spectroscopy. It is shown that the supplementary free volume brought by the plasticizer enhances molecular mobility and induces a concomitant decrease of the cooperativity length with the decrease of the activation energy.
Fichier non déposé

Dates et versions

hal-02061764 , version 1 (08-03-2019)

Identifiants

Citer

Nicolas Delpouve, Steven Araujo, Sandra Domenek, Alain Guinault, Laurent Delbreilh, et al.. Relaxation dynamics in plasticized polylactide. 9th International Conference on Times of Polymers and Composites. From Aerospace to Nanotechnology, Jun 2018, Ischia, Italy. pp.020055, ⟨10.1063/1.5045917⟩. ⟨hal-02061764⟩
126 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More