Glass fibre aggregates: consequences on the dynamic mechanical properties of polypropylene matrix composites

The aim of this study is to analyse the viscoelastic behaviour of commingled composites, polypropylene reinforced by 22, 35 and 50 vol% of unidirectional glass fibres, by taking into account qualitative and quantitative morphological analysis. The aim is to separate the mechanical properties of the different phases in order to reveal the presence of either an interphase or changes in PP chain motions due to the fibre aggregates.