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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
12/12/2017 |
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Data da última atualização: |
21/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DELUCIS, R. de A.; MAGALHAES, W. L. E.; PETZHOLD, C. L.; AMICO, S. C. |
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Afiliação: |
Rafael de Avila Delucis, Pós-graduando da UFRGS; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Cesar Liberato Petzhold, UFRGS; Sandro Campos Amico, Pós-graduando da UFRGS. |
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Título: |
Forest-based resources as fillers in biobased polyurethane foams. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Applied Polymer Science, v. 135, n. 3, artigo 45684, Jan. 2018. |
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Páginas: |
7 p. |
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DOI: |
10.1002/APP.45684 |
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Idioma: |
Inglês |
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Conteúdo: |
Six fillers from forestry wastes (wood, bark, cones and needles from young pine trees, kraft lignin, and recycled paper sludge from industry wastes) were incorporated into polyurethane (PU)-based foams prepared via free-rise pouring method. Variable filler contents (1, 5, and 10 wt %) and NCO/OH ratios (0.6, 0.9, and 1.2) were investigated. A simple mixture (1:3) of castor oil and crude glycerin (byproduct from biodiesel production) was used as biobased polyol. The foam composites were investigated through spectroscopy, morphological, mechanical, and hygroscopic analyses. The addition of fillers decreased water uptake and yielded rigid PU systems with more homogenous cell structure. The 1% and 5% reinforcement wood were the most effective among the studied compositions, with better mechanical and hygroscopic performance, probably due the higher compatibility of the wood with the PU system, which promote urethanic bonds between filler and isocyanate, as indicated by wet chemical results and micrographs. |
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Palavras-Chave: |
Compósitos; Thermosets. |
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Thesagro: |
Celulose; Madeira. |
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Thesaurus Nal: |
Cellulose; Composite materials; Composite wood products. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01770naa a2200265 a 4500
001 2082257
005 2018-05-21
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1002/APP.45684$2DOI
100 1 $aDELUCIS, R. de A.
245 $aForest-based resources as fillers in biobased polyurethane foams.$h[electronic resource]
260 $c2018
300 $a7 p.
520 $aSix fillers from forestry wastes (wood, bark, cones and needles from young pine trees, kraft lignin, and recycled paper sludge from industry wastes) were incorporated into polyurethane (PU)-based foams prepared via free-rise pouring method. Variable filler contents (1, 5, and 10 wt %) and NCO/OH ratios (0.6, 0.9, and 1.2) were investigated. A simple mixture (1:3) of castor oil and crude glycerin (byproduct from biodiesel production) was used as biobased polyol. The foam composites were investigated through spectroscopy, morphological, mechanical, and hygroscopic analyses. The addition of fillers decreased water uptake and yielded rigid PU systems with more homogenous cell structure. The 1% and 5% reinforcement wood were the most effective among the studied compositions, with better mechanical and hygroscopic performance, probably due the higher compatibility of the wood with the PU system, which promote urethanic bonds between filler and isocyanate, as indicated by wet chemical results and micrographs.
650 $aCellulose
650 $aComposite materials
650 $aComposite wood products
650 $aCelulose
650 $aMadeira
653 $aCompósitos
653 $aThermosets
700 1 $aMAGALHAES, W. L. E.
700 1 $aPETZHOLD, C. L.
700 1 $aAMICO, S. C.
773 $tJournal of Applied Polymer Science$gv. 135, n. 3, artigo 45684, Jan. 2018.
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| 7. |  | ANDRADE, K. R.; CARVALHO, L. M. de; CARVALHO, H. W. L. de; OLIVEIRA, I. R. de; ALMEIDA, N. A. Desempenho de variedades de aipim em Umbaúba, estado de Sergipe. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 18; ENCONTRO DE PÓS-GRADUAÇÃO, 4., 2008, São Cristóvão. Anais... São Cristóvão: UFS, 2008. Ciências agrárias. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
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| 8. | | ALMEIDA, N. A.; ANDRADE, K. R.; CARVALHO, L. M. de; OLIVEIRA, I. R. de; CARNELOSSI, M. A. G. Efeito da deficiência hídrica no cultivo de funcho. In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 13.; REUNIÃO LATINO-AMERICANA DE FISIOLOGIA VEGETAL MUDANÇAS CLIMÁTICAS E GLOBAIS: DO GENE À PLANTA, 14., 2011, Búzios, RJ. Livro de resumos... Campos dos Goytacazes: UENF, 2011. p. 83. Trabalhos publicados em Brazilian Journal of Plant Phisiology. Resumo em anais.| Tipo: Resumo em Anais de Congresso |
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