Artigo de periodico

Eco-friendly polyurethane foams based on castor polyol reinforced with açaí residues for building insulation (2022)

• Authors:
  • Oliveira, Beatriz P.
  • Balieiro, Lorena C. S.
  • Maia, Lana S.
  • Zanini, Noelle C.
  • Teixeira, Ericson J. O.
  • Conceição, Monique O. T.
  • Medeiros, Simone de Fátima
  • Mulinari, Daniella Regina
• Autor USP: SAMPAIO, SIMONE DE FÁTIMA MEDEIROS - EEL
• Unidade: EEL
• DOI: 10.1007/s10163-021-01341-1
• Assunto: AÇAÍ
• Keywords: Polyurethane foams; Açaí residues; Water absorption; Thermal properties; Mechanical properties
• Agências de fomento:
  • Financiamento FAPERJ
• Language: Inglês
• Abstract: The search for environmental sustainability has stimulated the construction sector to look for natural materials with an ecological footprint, high strength/weight ratio, and better thermal and mechanical properties. Besides those properties, water absorption studies are necessary to reach these requirements. This research proposes to evaluate changes in the visual appearance, density, chemical structure, morphology, water absorption, porosity, and thermal and mechanical properties in castor oil-based polyurethane reinforced with açaí waste (5–20 wt%). Results exposed that the addition of fiber to the PU reduced the pore size due to the increased cross-link density of PU foams caused by incorporating additional fiber groups, reacting with isocyanate groups. Also, the fibers were hydrogen bonded to the PU molecular chains via the interaction between the O–H of the fibers and the N–H of the PU foam. The water absorption of the biocomposites increased with time and with fiber loading; however, it did not surpass pure PU. The fiber addition improved crystallinity and hydrophobicity. The compressive strength presented a decreasing trend, while, for the impact test, an increase was observed proportionally to the açaí residue content. Thus, the developed biocomposites can be a possibility for alternative eco-efficient building insulators.
• Source:
  • Título: Journal of Material Cycles and Waste Management
  • ISSN: 14384957
  • Volume/Número/Paginação/Ano: v., n. , p.1-, 2022

Informações sobre o DOI: 10.1007/s10163-021-01341-1 (Fonte: oaDOI API)
• Este periódico é de assinatura
• Este artigo NÃO é de acesso aberto
  
• Cor do Acesso Aberto: closed

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How to cite

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• ABNT

  OLIVEIRA, Beatriz P. et al. Eco-friendly polyurethane foams based on castor polyol reinforced with açaí residues for building insulation. Journal of Material Cycles and Waste Management, n. , p. 1-, 2022Tradução . . Disponível em: https://doi.org/10.1007/s10163-021-01341-1. Acesso em: 30 dez. 2025.

• APA

  Oliveira, B. P., Balieiro, L. C. S., Maia, L. S., Zanini, N. C., Teixeira, E. J. O., Conceição, M. O. T., et al. (2022). Eco-friendly polyurethane foams based on castor polyol reinforced with açaí residues for building insulation. Journal of Material Cycles and Waste Management, ( ), 1-. doi:10.1007/s10163-021-01341-1

• NLM

  Oliveira BP, Balieiro LCS, Maia LS, Zanini NC, Teixeira EJO, Conceição MOT, Medeiros S de F, Mulinari DR. Eco-friendly polyurethane foams based on castor polyol reinforced with açaí residues for building insulation [Internet]. Journal of Material Cycles and Waste Management. 2022 ;( ): 1-.[citado 2025 dez. 30 ] Available from: https://doi.org/10.1007/s10163-021-01341-1

• Vancouver

  Oliveira BP, Balieiro LCS, Maia LS, Zanini NC, Teixeira EJO, Conceição MOT, Medeiros S de F, Mulinari DR. Eco-friendly polyurethane foams based on castor polyol reinforced with açaí residues for building insulation [Internet]. Journal of Material Cycles and Waste Management. 2022 ;( ): 1-.[citado 2025 dez. 30 ] Available from: https://doi.org/10.1007/s10163-021-01341-1

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