Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
12/12/2017 |
Data da última atualização: |
21/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
DELUCIS, R. de A.; MAGALHAES, W. L. E.; PETZHOLD, C. L.; AMICO, S. C. |
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. |
Título: |
Forest-based resources as fillers in biobased polyurethane foams. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Journal of Applied Polymer Science, v. 135, n. 3, artigo 45684, Jan. 2018. |
Páginas: |
7 p. |
DOI: |
10.1002/APP.45684 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Compósitos; Thermosets. |
Thesagro: |
Celulose; Madeira. |
Thesaurus NAL: |
Cellulose; Composite materials; Composite wood products. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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Registro original: |
Embrapa Florestas (CNPF) |
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