Morphology of injection moulded iPP samples

Abstract

Morphology (in terms of distribution along thickness of crystallinity degree, molecular orientation and dimensions of spherulites) was characterised by adopting different experimental techniques, and analysed with reference to the solidification conditions. Morphological characteristics of the samples were compared with the predictions of a simulation code developed at University of Salerno. In internal layers, calculations provide a satisfactorily description of data. In layers closer to sample skin, results show a large effect of molecular orientation on crystallisation kinetics of alpha phase.