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Environmental benefits of substituting talc by sugarcane bagasse fibers as reinforcement in polypropylene composites: Ecodesign and LCA as strategy for automotive components

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  • Luz, Sandra M.
  • Caldeira-Pires, Armando
  • Ferrão, Paulo M.C.

Abstract

The auto industry is compelled to improve its environmental performance, namely by making use of renewable materials and cleaner manufacturing processes with lower energy intensity, and at the end-of-life of the auto, recyclable products and materials are desirable specifications that need to be considered at an earlier design stage, i.e., promoting the ecodesign. This paper provides an analysis of such a strategy for a material that is used extensively in the auto industry, namely polypropylene composites, as we have quantified the environmental impacts when sugarcane bagasse-reinforced polypropylene substitutes for talc-filled polypropylene (PP). To achieve these goals, a comparative Life Cycle Assessment (LCA) was performed for the two alternatives, from raw extractions to the end-of-life (EOL) phase of sugarcane bagasse-PP and talc-PP composite, where data gathered in different industries in Brazil were included in the LCA GaBi software. Our analysis shows that in addition to similar mechanical performance, natural fiber composites showed superior environmental performance throughout the entire life cycle. This superior performance is because: (1) in the cultivation phase, sugarcane absorbs carbon through the photosynthesis process while growing, thus reducing the global warming impact of the materials used; (2) the production process is cleaner; (3) sugarcane bagasse-reinforced composites are lighter for equivalent performance, which reduces the amount of polypropylene used; and (4) the economic reuse proposed for the EOL sugarcane bagasse-PP composite was the best alternative to minimize environmental impacts.

Suggested Citation

  • Luz, Sandra M. & Caldeira-Pires, Armando & Ferrão, Paulo M.C., 2010. "Environmental benefits of substituting talc by sugarcane bagasse fibers as reinforcement in polypropylene composites: Ecodesign and LCA as strategy for automotive components," Resources, Conservation & Recycling, Elsevier, vol. 54(12), pages 1135-1144.
    • Handle: RePEc:eee:recore:v:54:y:2010:i:12:p:1135-1144
    DOI: 10.1016/j.resconrec.2010.03.009
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    References listed on IDEAS

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    1. D. J. Gielen & J. Fujino & S. Hashimoto & Y. Moriguchi, 2002. "Biomass strategies for climate policies?," Climate Policy, Taylor & Francis Journals, vol. 2(4), pages 319-333, December.
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    1. Pegoretti, Thaís dos Santos & Mathieux, Fabrice & Evrard, Damien & Brissaud, Daniel & Arruda, José Roberto de França, 2014. "Use of recycled natural fibres in industrial products: A comparative LCA case study on acoustic components in the Brazilian automotive sector," Resources, Conservation & Recycling, Elsevier, vol. 84(C), pages 1-14.
    2. Toniolo, Sara & Mazzi, Anna & Garato, Valentina Giulia & Aguiari, Filippo & Scipioni, Antonio, 2014. "Assessing the “design paradox” with life cycle assessment: A case study of a municipal solid waste incineration plant," Resources, Conservation & Recycling, Elsevier, vol. 91(C), pages 109-116.
    3. Väntsi, Olli & Kärki, Timo, 2015. "Environmental assessment of recycled mineral wool and polypropylene utilized in wood polymer composites," Resources, Conservation & Recycling, Elsevier, vol. 104(PA), pages 38-48.

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