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Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

PAZ, Renê Anisio da et al. Mechanical and thermomechanical properties of polyamide 6/Brazilian organoclay nanocomposites. Polímeros [online]. 2016, vol.26, n.1, pp.52-60.  Epub 15-Mar-2016. ISSN 1678-5169.  https://doi.org/10.1590/0104-1428.1748.

Polymer/clay nanocomposites are a new class of composites with polymer matrices where the disperse phase is a silicate with elementary particles that have at least one of dimensions in nanometer order. Polyamide 6/Brazilian organoclay nanocomposites were prepared by melt intercalation, and the mechanical, thermal and thermomechanical properties were studied. The structure and morphology of the nanocomposites were evaluated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was verified by XRD and TEM analysis that all systems presented exfoliated structure predominantly. By thermogravimetry (TG), nanocomposites showed higher stabilities in relation to pure polymer. It was observed that the nanocomposites showed better mechanical properties compared to the properties of polyamide 6. The heat deflection temperature (HDT) values of the nanocomposites showed a significant increase in relation to pure polymer.

Palavras-chave : nanocomposites; polyamide 6; HDT; organoclays.

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