Fracture behavior of amorphous and semicrystalline blends of poly(vinylidene fluoride) and poly(methyl methacrylate)

Lucien Laiarinandrasana (1) , Yannick Nziakou (2) , Jean Louis Halary (2)

1 CDM - Centre des Matériaux
2 ESPCI Paris - Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris

The fracture behavior of blends of poly(vinylidene fluoride) and poly(methyl methacrylate) was investigated all over the composition range. A detailed analysis of the net stress versus crack opening displacement curves was performed. Fracture surface observations allowed statements on the process zone characteristics ahead of the crack tip. For the amorphous blends, the crack initiation energy is well related to the glass transition temperature. For the semicrystalline blends, the fracture energy is correlated with the degree of crystallinity.

Mots clés: blends; crack initiation; crack propagation; fracture; fracture toughness; mechanical properties; poly(methyl methacrylate); poly(vinylidene fluoride); blends

Domaines: Mécanique des matériaux [physics.class-ph]

Lucien Laiarinandrasana, Yannick Nziakou, Jean Louis Halary. Fracture behavior of amorphous and semicrystalline blends of poly(vinylidene fluoride) and poly(methyl methacrylate). Journal of Polymer Science Part B: Polymer Physics, 2012, Deformation, Yield and Fracture of Polymers, 50 (24), pp.1740-1747. ⟨10.1002/polb.23188⟩. ⟨hal-03359089⟩