Title :

Mechanistic insights on ultra-tough polylactide-based ionic nanocomposites

Author(s) :

Potaufeux, Jean-Emile [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Université de Mons / University of Mons [UMONS]
Odent, Jérémy [Auteur]
Université de Mons / University of Mons [UMONS]
Notta-Cuvier, Delphine [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Delille, Rémi [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Barrau, Sophie [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Giannelis, Emmanuel P. [Auteur]
Cornell University [New York]
Lauro, Franck [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Raquez, Jean-Marie [Auteur]
Université de Mons / University of Mons [UMONS]

Journal title :

Composites Science and Technology

Abbreviated title :

Composites Science and Technology

Pages :

108075

Publisher :

Elsevier BV

Publication date :

2020-05

ISSN :

0266-3538

English keyword(s) :

Ionic network
Smart materials
Nano composites
Fracture toughness
Extrusion

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

We report the synthesis and characterization of ultra-tough polylactide-based ionic nanocomposites via melt-blending of commercial polylactide (PLA), imidazolium-functionalized poly(ethylene glycol)-based polyurethane ...
Show more >We report the synthesis and characterization of ultra-tough polylactide-based ionic nanocomposites via melt-blending of commercial polylactide (PLA), imidazolium-functionalized poly(ethylene glycol)-based polyurethane (im-PU) and surface-modified sulfonated silica nanoparticles (SiO2–SO3H) using extrusion techniques. The proximity of bulky pendant imidazolium cationic sites attached onto the highly functionalized polyurethane to the anionic sulfonate groups at the silica nanoparticle surface readily allow maximizing dynamic ionic interactions within the resulting PLA-based materials. This new design leads to a unique property profile that combines ultra-toughness (no break) and ductility (up to 150%), without critical loss of stiffness as well as improved thermal stability (up to 40 °C higher compared to neat PLA). In addition, we present a detailed mechanistic study aiming at elucidating the energy-dissipative toughening in these PLA/im-PU/SiO2–SO3H blends under quasi-static and high-speed loadings (ca. impact, tensile, 3-points bending). Relying on Small-Angle X-Ray Scattering (SAXS), creep and rheological measurements, a toughening mechanism is finally proposed to account for the impact behavior of the resulting ionic nanocomposites.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2020-03-02T07:42:49Z
2020-03-02T07:49:33Z
2020-03-09T10:36:52Z