Analysis of the mechanical, thermal and morphological behaviour of polypropylene compounds with sisal fibre and wood flour, irradiated with gamma rays

摘要

We report a study of the mechanical, thermal and morphological behaviour of blends of polypropylene filled with wood flour and sisal fibre (at 60/40 and 80/20 compositions, respectively), subjected to different doses of gamma irradiation (10, 25, 30, 50, 60 and 70 kGy), at room temperature and in the presence of oxygen. In addition, studies were carried out by infrared spectroscopy and electronic paramagnetic resonance to analyse the formation of radicals or functional groups influencing the behaviour of the irra- diated compounds.