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 acesso aberto
• Este artigo NÃO é de acesso aberto
  

---

How to cite

A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas

• 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: 14 fev. 2026.

• 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 2026 fev. 14 ] 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 2026 fev. 14 ] Available from: https://doi.org/10.1007/s10163-021-01341-1

Últimas obras dos mesmos autores vinculados com a USP cadastradas na BDPI:

• A versatile filler in polyhydroxyalcanoates filaments for FDM: A diverse panorama for pullulan application
• Recycled Polypropylene and Their Sustainable Composite of Polypropylene as Novel 3D Printing Materials and Opportunities for the Circular Economy
• Upconverting Nanocarriers Enable Triggered Microtubule Inhibition and Concurrent Ferroptosis Induction for Selective Treatment of Triple-Negative Breast Cancer
• A promising sustainable PHB-ZnO composite for development of biodegradable filaments
• Electrospun poly(NVCL-co-AA) fibers as potential thermo-and pH-sensitive agents for controlled release of hydrophobic drugs
• Poly(NVCL-co-IA-co-EGDMA)-based hydrogel nanoparticles for drug controlled delivery: a study of colloidal stability and stimuli-responsive behavior
• Synthesis and characterization of poly( <i>N</i> -vinylcaprolactam)-based spray-dried microparticles exhibiting temperature and pH-sensitive properties for controlled release of ketoprofen
• Synthesis and characterization of stable aqueous dispersion of functionalized double-coated iron oxide nanoparticles
• Hydrophilic drug release from electrospun membranes made out of thermo and pH-sensitive polymers
• Fabrication of biocompatible and stimuli-responsive hybrid microgels with magnetic properties via aqueous precipitation polymerization