The integration of the environmental problem in the design of industrial products leads us to incorporate
vegetal fibres and recycled polymers into composite materials. The aim of this work is to study the
behaviour and the environmental interest of a recycled PP/hemp fibre after several injection cycles. The
mechanical and rheological behaviour of recycled PP/hemp composite was first studied by using tensile,
dynamical mechanic analysis and rheological measurements. Then, to better understand the influence of
the recycling, a morphology studywas carried out on composites by using optical and electron microscopy.
Finally, we investigated the environmental advantages of our composite thanks to a simplified environmental
assessment. Our results highlighted the environmental interest of using a recycled matrix to
prepare composites reinforced with vegetal fibres and the interesting properties of this material after
recycling.