Abstract
The study of modification by melt alloying of recovered polypropylene with styrene and a-methylstyrene-diene block-copolymers is presented in this paper. The block-copolymers were synthetized with the same composition and molecular weight in order to relieve more accurately the influence of the component block nature upon the modification degree of the polyolefin. It was found that only the nature of the diene block has a significant influence on the intensity of the modification degree for recovered polypropylene. Keywords: recovered polypropylene, styrene-isoprene block-copolymers (SIS), styrene-butadiene block-copolymers (SBS), a-methylstyrene-butadiene block-copolymers (aMeSBaMeS)