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Ductile-brittle transition behaviour of PLA/o-MMT films during the physical aging process

Author
Maspoch, M.; Santana, O.; Cailloux, J.; E Franco-Urquiza; Rodríguez, C.; Belzunce Varela, Javier; Martinez, A.
Type of activity
Journal article
Journal
Express polymer letters
Date of publication
2015-03-01
Volume
9
Number
3
First page
185
Last page
195
DOI
https://doi.org/10.3144/expresspolymlett.2015.20 Open in new window
Project funding
Modificación del PLA mediante extrusión reactiva para la mejora del procesado, del comportamiento a fractura y de la preparación de nanocompuestos biodegradables
Abstract
The ductile-brittle transition behaviour of organo modified montmorillonite-based Poly(lactic acid) films (PLA/o-MMT) was analysed using the Essential Work of Fracture (EWF) methodology, Small Punch Tests (SPT) and Enthalpy relaxation analysis. While the EWF methodology could only be applied successfully to de-aged samples, small punch test (SPT) was revealed as more effective for a mechanical characterization during the transient behaviour from ductile to brittle. According to differential scan...
Keywords
PLA, essential work, fracture and fatigue, fracture ewf method, nanocomposites, physical aging, poly(l-lactide), poly(lactic acid), polymer nanocomposites, relaxation, sheets, small punch test, toughness
Group of research
POLY2 - Polyfunctional polymeric materials
POLYCOM - Polymer and composite: technology
e-PLASCOM - Eco-friendly Plastics and Composites

Participants