Mechanical behavior and essential work of fracture of starch-based blown films

M. Nottez (1, 2) , S. Chaki (1, 2, 3) , J. Soulestin (1, 2, 3) , M. Lacrampe (1, 2, 3) , P. Krawczak (2, 1, 3)

1 TPCIM - Département Technologie des Polymères et Composites & Ingénierie Mécanique
2 Mines Douai EMD - École des Mines de Douai
3 IMT Lille Douai - Ecole nationale supérieure Mines-Télécom Lille Douai

A fracture mechanics approach (Essential Work of Fracture, EWF) was applied to assess the toughness of novel partly starch-grafted polyolefin blown films, compared to that of a neat polyethylene reference. Tests were performed on double-end notched samples. The digital image correlation method was used to monitor the deformation field around the notch. Regular tensile and tear tests were also carried out. The specific essential work of fracture is a characteristic which is much more sensitive to materials structural modifications than the tensile or tear properties.

Domaines: Science des matériaux [cond-mat.mtrl-sci]; Polymères; Mécanique des matériaux [physics.class-ph]

M. Nottez, S. Chaki, J. Soulestin, M. Lacrampe, P. Krawczak. Mechanical behavior and essential work of fracture of starch-based blown films. The 30th International Conference of the Polymer Processing Society (PPS-30), Jun 2014, Cleveland, United States. pp.080007.1 - 080007.5, ⟨10.1063/1.4918463⟩. ⟨hal-01773466⟩