Rigid polyurethane foams made from chemically recycled pet and pcbjpe modelo de artículo

Authors

  • Kamilly S. Souza

    EEEFM Wallace Castelo Dutra – ES

    Author

  • Luiz H. Bigles

    EEEFM Wallace Castelo Dutra – ES

    Author

  • Luiz H. de Lima

    EEEFM Wallace Castelo Dutra – ES

    Author

  • Paulo da Silva

    EEEFM Wallace Castelo Dutra – ES

    https://orcid.org/0009-0002-9214-8899

    Author

  • Samuel L. Silvero

    EEEFM Wallace Castelo Dutra – ES

    https://orcid.org/0009-0007-5249-4806

    Author

  • David Manuel Costa Passinhas

    Universidade Federal do Espírito Santo, CEUNES - Centro Universitário Norte do Espírito Santo.

    https://orcid.org/0000-0003-3751-6169

    Author

  • Breno Nonato Melo

    Universidade Federal do Espírito Santo, CEUNES - Centro Universitário Norte do Espírito Santo.

    https://orcid.org/0000-0002-2681-3881

    Author

Keywords:
Chemical recycling, Plastics, Polyurethanes
Abstract

Polyethylene terephthalate (PET) and polycarbonate (PC) reacted with glycerol produce polyol precursors for polyurethanes. Polyurethanes were synthesized from PET and PC depolymerized in glycerol reacted with 4,4'-diphenylmethane diisocyanate (MDI) in ratios of 0.8 and 1.0 using water as a blowing agent at 0%, 1% and 2%. The hydroxyl content was 287 ± 10 mgKOH/g for the polyol from PET (PET-OL) and 520.99 ± 11.62 mgKOH/g for the polyol from PC (PC-OL). The FTIR spectra of the synthesized PUs showed the typical PU bands (1730 cm-1) and those synthesized from PC-OL showed remnant MDI seen by the band at 2270 cm-1. They had apparent densities of less than 0.6 g/cm3, typical of thermal insulators. The density decreased as the water content increased, as did the NCO/OH ratio. In addition, the materials synthesized with PET-OL are denser than those synthesized with PC-OL. The optical microscopy images of the PU topographies indicate homogeneous materials containing more closed cells than open ones. PU’s made with PC-OL absorb more water than those made with PET-OL.

Author Biographies
  1. David Manuel Costa Passinhas, Universidade Federal do Espírito Santo, CEUNES - Centro Universitário Norte do Espírito Santo.

    Graduando em Engenharia Química pela Universidade Federal do Espírito Santo. Técnico em Administração pelo Instituto Federal de Educação, Ciência e Tecnologia Baiano - campus Teixeira de Freitas. Atua como acessor de Vendas da ProjetaJr e pesquisador FAPES na área de Polímeros e Poliuretanos reciclados.

  2. Breno Nonato Melo, Universidade Federal do Espírito Santo, CEUNES - Centro Universitário Norte do Espírito Santo.

    Possui graduação (1998) e doutorado (2008) em Química , ambos pela Universidade Federal de Minas Gerais. Atualmente é professor associado III da Universidade Federal do Espírito Santo, vinculado ao Centro Universitário do Norte do Espírito santo (CEUNES). Tem experiência na área de Físico-Química e química orgânica com ênfase em Polímeros, atuando principalmente nos seguintes temas: piche vegetal, poliuretanos, fibras vegetais, caracterização de materiais, compósitos de fontes renováveis, biodegradação, extração de produtos naturais, reciclagem terciária de plásticos e emulsões de petróleo.

References

Thakur, V. K. (2015). Recycled Polymers: Properties and Applications, UK, Smithers Rapra, v.2.

Rosa, D. P, Araújo, L. V, Araújo, R. C. S., Paterno, L. G., Mol, A. R., Pasa, V. M. D., & Melo, B. N. (2019). PET-OL uma nova classe de polóis na síntese de poliuretanos, 15º CBPOL, Bento Gonçalves, Brasil.

Kao, C. Y., Cheng, W. H., & Wan, B. Z. (1997). lnvestigation of catalystic glycolysis to polyethylene terephthalate by differential scanning calorimetry. Thermochimica Acta, 292, 95-104. Recuperado de https://scholars.lib.ntu.edu.tw/bitstream/123456789/66867/1/08.pdf

Giovanella, J., Janczkowski, R., Soares, G. C., Serafim, C. E., Ramos, T. O. B., Silva, C. W., da, Molinari, E. J., & Conti, D. S. (2008). Reciclagem de materiais: estudo das propriedades mecânicas de policarbonato reciclado de discos compactos, Revista Matéria, 13(4), 643-649. Recuperado de https://www.scielo.br/j/rmat/a/tL3Lyz7Pv7MtTFbktdzC7QC/?format=pdf&lang=pt

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Published
2023-12-15
Issue
Vol. 9 No. 6 (2023): Special Edition Chemistry Week of the North of Espírito Santo (SEQUINES)
Section
Edição Especial "Semana de Química do Norte do Espírito Santo
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How to Cite

Souza, K. S., Bigles, L. H., Lima, L. H. de, Silva, P. da, Silvero, S. L., Passinhas, D. M. C., & Melo, B. N. (2023). Rigid polyurethane foams made from chemically recycled pet and pcbjpe modelo de artículo. Brazilian Journal of Production Engineering, 9(6), 01-05. https://periodicos.ufes.br/bjpe/article/view/43235