**4.5 Applications of recycled PP**

Recycled polypropylene can be used for packaging articles, automobile bumper, foams, bottle tops, carpets, and household components [13] and in making straws

and sweet wrappings, PP powder, and PP mulch at concentrations ranging from 2 to 5% by mass of bitumen consistently desirable for bitumen asphalt applications [51]. The recycled PP is also applicable in 3D printing filament [77]. An application of recycled PP is dependent on good compatibility with modified materials with synergistic effects.
