Polypropylenes 2 Tensile strength Automotive parts 1 Bending moduli 1 Bending strength 1 Bending tests 1 Blending 1 Carbon dioxide 1 Commercial applications 1 Elastic moduli 1 Elongation at break 1 Fabrication 1 Flexural tests 1 Fracture mechanics 1 Fuel efficiency 1 Global warming 1 Hemp 1 High volumes 1 Injection molding 1 Large amounts 1 Mechanical properties 1 Moulding temperature 1 Nanostructured materials 1 Natural fiber composites 1 Natural fibers 1 Optimum composition 1 Plastic manufacturing industries 1 Plastic recycling 1 Plastic wastes 1 Professional aspects 1