Nanocompósitos de polietileno/argila bentonita nacional: influência da argila e do agente compatibilizante PE-g-MA nas propriedades mecânicas e de inflamabilidade
High 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 system...
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| Principais autores: | , , , , , |
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| Formato: | article |
| Idioma: | pt_BR |
| Publicado em: |
Associação Brasileira de Polímeros
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/37953 |
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| Resumo: | High 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 properties |
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