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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/04/2016 |
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Data da última atualização: |
10/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, B. D.; MISSIO, A. L.; CADEMARTORI, P. H. G. de; GATTO, D. A.; MAGALHAES, W. L. E. |
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Afiliação: |
Bruno D. Mattos, Integrated program in Engineering & Materials Science (PIPE), UFPR; André L. Missio, Forestry Engineering (PPGEF), UFSM; Pedro H. G. de Cademartori, Wood and Forestry Science Center (PPGEF), UFPR; Darci A. Gatto, Professor da UFSM; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Color changes of wood from Pinus taeda and Schizolobium parahybum treated by in situ polymerization of methyl methacrylate using cross-linkers. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Maderas. Ciencia y tecnología, Concepción, v. 18, n. 1, p. 113-124, ene. 2016. |
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DOI: |
10.4067/S0718-221X2016005000012 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the colorimetric properties of Pinus taeda and Schizolobium parahybum woods treated by in situ polymerization. The wood samples were impregnated in a vacuum/ pressure system and polymerized in an oven at 90°C for 10h, using benzoyl peroxide at 1,5wt% as the catalyst. The treatments were characterized using attenuated total reflectance infrared (ATRIR) spectroscopy and weight percentage gain (WPG). The color evaluation was performed using CIEL*a*b* concepts, specular gloss, and UV-Visible spectrophotometry. Treated woods showed increases in band intensity related to polymers (1730, 1460 and 1145 cm-1), and WPG ranged from 39 to 164%, depending of the wood species and treatments. Lightness decreased, while the Chroma, gloss and the color coordinates increased. A darkening of the all treated samples was observed, and confirmed by the decrease in the reflectance intensity between 400 and 700 nm. |
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Palavras-Chave: |
Composites (materials); Espécie exótica; Free radical polymerization; Heat catalyst; Schizolobium parahybum; UV-Vis. |
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Thesagro: |
Espécie nativa; Madeira; Pinus Taeda; Tratamento. |
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Thesaurus Nal: |
Polymers; Wood treatment. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142217/1/2016-Washington-Maderas-Collor.pdf
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Marc: |
LEADER 01978naa a2200325 a 4500
001 2043030
005 2017-07-10
008 2016 bl uuuu u00u1 u #d
024 7 $a10.4067/S0718-221X2016005000012$2DOI
100 1 $aMATTOS, B. D.
245 $aColor changes of wood from Pinus taeda and Schizolobium parahybum treated by in situ polymerization of methyl methacrylate using cross-linkers.$h[electronic resource]
260 $c2016
520 $aThe aim of this study was to evaluate the colorimetric properties of Pinus taeda and Schizolobium parahybum woods treated by in situ polymerization. The wood samples were impregnated in a vacuum/ pressure system and polymerized in an oven at 90°C for 10h, using benzoyl peroxide at 1,5wt% as the catalyst. The treatments were characterized using attenuated total reflectance infrared (ATRIR) spectroscopy and weight percentage gain (WPG). The color evaluation was performed using CIEL*a*b* concepts, specular gloss, and UV-Visible spectrophotometry. Treated woods showed increases in band intensity related to polymers (1730, 1460 and 1145 cm-1), and WPG ranged from 39 to 164%, depending of the wood species and treatments. Lightness decreased, while the Chroma, gloss and the color coordinates increased. A darkening of the all treated samples was observed, and confirmed by the decrease in the reflectance intensity between 400 and 700 nm.
650 $aPolymers
650 $aWood treatment
650 $aEspécie nativa
650 $aMadeira
650 $aPinus Taeda
650 $aTratamento
653 $aComposites (materials)
653 $aEspécie exótica
653 $aFree radical polymerization
653 $aHeat catalyst
653 $aSchizolobium parahybum
653 $aUV-Vis
700 1 $aMISSIO, A. L.
700 1 $aCADEMARTORI, P. H. G. de
700 1 $aGATTO, D. A.
700 1 $aMAGALHAES, W. L. E.
773 $tMaderas. Ciencia y tecnología, Concepción$gv. 18, n. 1, p. 113-124, ene. 2016.
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Embrapa Florestas (CNPF) |
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