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This study polystyrene-b-poly (ethylene-r-butylene)-b-polystyrene (SEBS) elastomer to modify recycled polypropylene (RPP). Tensile strength test, impact strength test, and a polarized light microscope are used to evaluate the mechanical properties and spherulite morphology of the resulting RPP/SEBS polyblends. The experiment results show that with an increase in SEBS, tensile strength of the polyblends decreases from 29 MPa to 13 MPa. With the distribution of SEBS in RPP, the spherulite size of RPP decreases, but the impact strength significantly increases.

This study produces the far-infrared emitting composites by using impact-resistant polypropylene, short glass fibers, and far-infrared masterbatches. The addition of short glass fiber and far-infrared masterbatches is then evaluated to determine their influence on the mechanical properties and far-infrared emissivity of the resulting composites. The experimental results show that with an increase in the content of short glass fibers, the tensile strength increases from 34 MPa to 56 MPa, the far-infrared emissivity increases from 0.85 to 0.93, but the impact strength decreases from 1037 J/m to 197 J/m, proving that the resulting composites have desired mechanical properties and far-infrared emission.