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Thermal and mechanical properties of the açaí fiber/natural rubber composites

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Abstract

The açaí fruit industrial processing produces a large amount of waste, mainly seeds and fibers, which is a serious environmental and public health problem. The objective of this work was to use these fibers to obtain composites with natural rubber from different clones. The effect of the addition of açaí fibers and the type of clone were investigated using thermogravimetric analysis (TGA) under inert and oxidative atmospheres, differential scanning calorimetry (DSC), water sorption, and mechanical properties. The açaí fibers exhibited a thermal behavior comparable to other natural fibers industrially used in polymeric composites. The addition of the fibers did not influence the thermal stability of the composites. There was no significant effect of the type of clone and the addition of the fiber on the glass transition temperature, which was approximately −59 °C for all samples. Water sorption behavior of the compounds and of the composites was similar to that of the other materials with natural rubber that are reported in the literature. The promising performance of the composites with açaí fibers opens a new area of use for such fibers.

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Acknowledgement

The authors thank FAPESP and CNPq for their financial support.

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Authors and Affiliations

  1. Agronomic Institute, APTA/IAC - Av. Barão de Itapura 1481, 13020-902, Campinas, Brazil

    M. A. Martins & P. S. Gonçalves

  2. Embrapa Agricultural Instrumentation, C.P. 741, São Carlos, SP, 13560-970, Brazil

    M. A. Martins & J. D. C. Pessoa

  3. Embrapa Eastern Amazon, C.P. 48, 66095-100, Belém, Brazil

    F. I. Souza

  4. National Nanotechnology Laboratory for Agribuseness (LNNA), Embrapa Agricultural Instrumentation, C.P. 741, São Carlos, SP, 13560-970, Brazil

    L. H. C. Mattoso

Authors
  1. M. A. Martins
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  2. J. D. C. Pessoa
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  3. P. S. Gonçalves
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  4. F. I. Souza
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  5. L. H. C. Mattoso
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Correspondence to L. H. C. Mattoso.

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Martins, M.A., Pessoa, J.D.C., Gonçalves, P.S. et al. Thermal and mechanical properties of the açaí fiber/natural rubber composites. J Mater Sci 43, 6531–6538 (2008). https://doi.org/10.1007/s10853-008-2842-4

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  • DOI: https://doi.org/10.1007/s10853-008-2842-4

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