Contribution à l’étude de l’effet du traitement thermique sur les diverses propriétés d’un nanocomposite à matrice polypropylène

Abstract

In this work we have studied the effects of heat treatment (quenching and annealing) on the mechanical, physical, thermal and morphological properties of a semi-crystalline matrix nanocomposite (polypropylene), with a reinforced lamellar filler, montmorillonite. The results have shown that, the structural stresses at slow cooling rate increase the modulus of elasticity, the stress at break, the hardness but decrease the elongation at break and Izod impact strength of these nanocomposites. The degree of crystallinity increases gradually with the increase in quenching temperature. However, the highest value is obtained in the case of the annealed sample.