HARADA, JULIOMARCONDES, CLAUDIO A.ARQUINTO, JULIANAPEREIRA, MARIA da C.C.SILVA, LEONARDO G. de A. e2024-12-102024-12-102024HARADA, JULIO; MARCONDES, CLAUDIO A.; ARQUINTO, JULIANA; PEREIRA, MARIA da C.C.; SILVA, LEONARDO G. de A. e. Evaluation of graphene incorporation for mechanical properties of polypropylene composites. <b>Polímeros</b>, v. 34, n. 3, p. 1-5, 2024. DOI: <a href="https://dx.doi.org/10.1590/0104-1428.20240016">10.1590/0104-1428.20240016</a>. Disponível em: https://repositorio.ipen.br/handle/123456789/48735.0104-1428https://repositorio.ipen.br/handle/123456789/48735Graphene nanoparticles (GnP) were selected as an alternative reinforcing nanofillers, which enhances the mechanical properties of polypropylene (PP-homo and PP-block copolymer). It may play the role of compatibilizer in polypropylene-graft-maleic anhydride (PP-g-MA) from a double-screw extruder. The effect of GnP loading and the use of the PP-g-MA compatibilizer were studied. The influence on the mechanical properties of tensile strength, elongation at break, IZOD impact strength, and melting temperature in PP-homo and PP-block copolymer were investigated and compared. Their improvement was observed at to a certain amount of 0.3% (by mass) of GnP depending on the substrate nature: homopolymer or block copolymer. The increase from 69.3 J.m-1 to 176.0 J.m-1 corresponds to a 2.5 times rising in IZOD impact resistance for block copolymer. The PP block copolymer has a significant affinity in respect of the presence of graphene and the compatibilizer due to the elastomeric co-monomer present in the block copolymer.1-5openAccessArtigo de periódico33410.1590/0104-1428.20240016https://orcid.org/0000-0002-7968-211710.026.00