Ito, Edson NoriyukiBrito, Gustavo F.Oliveira, Amanda D. deAraújo, Edcleide MariaMelo, Tomas Jeferson AlvesBarbosa, Renata2021-09-222021-09-222008-06BRITO, Gustavo F.; OLIVEIRA, Amanda D. de; ARAÚJO, Edcleide M.; MELO, Tomás J. A. de; BARBOSA, Renata; ITO, Edson N. Nanocompósitos de polietileno/argila bentonita nacional: influência da argila e do agente compatibilizante pe-g-ma nas propriedades mecânicas e de inflamabilidade. Polímeros, [S.L.], v. 18, n. 2, p. 170-177, jun. 2008. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282008000200015&lng=pt&tlng=pt. Acesso em: 07 jan. 2021. http://dx.doi.org/10.1590/s0104-14282008000200015.0104-14281678-5169https://repositorio.ufrn.br/handle/123456789/37953High density polyethylene/national bentonite clay nanocomposites were prepared with the melt intercalation technique. The effect of the clay without treatment and clay treated with quaternary ammonium salt Cetremide with polyethylene-graft-maleic anhydride as coupling agent was evaluated. The systems were characterized by flammability, mechanical and rheological properties, X ray diffraction and transmission electron microscopy. In general, the results of X ray diffraction and transmission electron microscopy showed partially exfoliated and/or intercalated structures with higher tensile modulus and torque value. The flammability test showed that the addition of clay in the polymer matrix and PE-g-MA reduced the burning rate, indicating an improved flammability resistance of the nanocomposites. In general, the system containing PE-g-MA coupling agent led to partially exfoliated nanocomposites with higher thermal stability than the high density polyethylene matrix. The polyethylene-graft-maleic anhydride promoted the exfoliation of clay and adhesion between matrix and filler, thus resulting in enhanced mechanical propertiesAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/NanocompósitosPolietilenoArgila bentonita nacionalInflamabilidadeNanocompositesPolyethyleneNational bentonite clayFlammabilityarticle10.1590/s0104-14282008000200015