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| 244. |  | ORTIZ, M. A.; TAVARES, L. B. B.; NEITZEL, T.; SILVA, P. R.; MAGALHAES, W. L. E. Influência de compostos do pré-tratamento de biomassa florestal no crescimento de Saccharomyces cerevisiae JP1. In: MOSTRA INTEGRADA DE ENSINO, PESQUISA E EXTENSÃO, 6., 2012, Blumenau. Anais. Blumenau: FURB, 2012. Resumo. Disponível online. MIPE.| Biblioteca(s): Embrapa Florestas. |
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| 251. | | MOLINARI, K. C.; MAGALHAES, W. L. E.; PAWLICKA, A.; MACHADO, G. de O. Torrefaction effects on Pinus taeda L. pellets: gravimetric yield, equilibrium moisture content, and high heating value. Molecular Crystals and Liquid Crystals, v. 693, n. 1, p. 7-17, 2019.| Biblioteca(s): Embrapa Florestas. |
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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. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
22/10/2014 |
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Data da última atualização: |
12/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MATTOS, B.; SERRANO, L.; GATTO, D.; MAGALHAES, W. L. E.; LABIDI, J. |
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Afiliação: |
Bruno dUFAU Mattos, Federal University of Pelotas; Luis Serrano, University of the Basque Country; Darci Gatto, Federal University of Pelotas; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Jalel Labidi, University of the Basque Country. |
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Título: |
Thermochemical and hygroscopicity properties of pinewood treated by in situ copolymerisation with methacrylate monomers. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Thermochimica Acta, n. 596, p. 70-78, 2014. |
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DOI: |
http://dx.doi.org/10.1016/j.tca.2014.09.018 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aims to evaluate the hygroscopicity and thermochemical properties of pine wood/polymer composites prepared by in situ polymerisation of methyl methacrylate (MMA) using glycidyl methacrylate (GMA) and methacrylic acid (MAA) as cross-linkers. The pine wood samples were impregnated in a vacuum/pressure system and polymerised in an oven at 90 C for 10 h, using benzoyl peroxide at 1.5 wt.% as catalyst. The composite was characterised through dynamic wettability, water uptake and dimensional stability tests, ATR-IR spectroscopy, TGA, and DSC. ATR-IR spectra show an increase of the peaks at 1746, 1460, and 1145 cm1 corresponding to the chemical structures of the polymers into the pores and capillaries of treated wood. The TGA and DSC analysis pointed out a chemical interaction between the copolymer and the wood cell wall in composites with GMA and MAA. The composites prepared with MMA presented improvements for the hygroscopicity and dimensional stability properties by 50%. However, the addition of GMA and MAA resulted in the best increases for hydrophobicity and dimensional stability of the samples, 65?78%. |
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Palavras-Chave: |
Compósito; Fast growing pinewood; Free radical polymerisation; Heat catalyst; Polímero; Propriedade higroscópica; Propriedade termoquímica. |
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Thesagro: |
Madeira; Tratamento. |
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Thesaurus NAL: |
crosslinking; Pinus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02069naa a2200313 a 4500
001 1998011
005 2014-12-12
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.tca.2014.09.018$2DOI
100 1 $aMATTOS, B.
245 $aThermochemical and hygroscopicity properties of pinewood treated by in situ copolymerisation with methacrylate monomers.$h[electronic resource]
260 $c2014
520 $aThis study aims to evaluate the hygroscopicity and thermochemical properties of pine wood/polymer composites prepared by in situ polymerisation of methyl methacrylate (MMA) using glycidyl methacrylate (GMA) and methacrylic acid (MAA) as cross-linkers. The pine wood samples were impregnated in a vacuum/pressure system and polymerised in an oven at 90 C for 10 h, using benzoyl peroxide at 1.5 wt.% as catalyst. The composite was characterised through dynamic wettability, water uptake and dimensional stability tests, ATR-IR spectroscopy, TGA, and DSC. ATR-IR spectra show an increase of the peaks at 1746, 1460, and 1145 cm1 corresponding to the chemical structures of the polymers into the pores and capillaries of treated wood. The TGA and DSC analysis pointed out a chemical interaction between the copolymer and the wood cell wall in composites with GMA and MAA. The composites prepared with MMA presented improvements for the hygroscopicity and dimensional stability properties by 50%. However, the addition of GMA and MAA resulted in the best increases for hydrophobicity and dimensional stability of the samples, 65?78%.
650 $acrosslinking
650 $aPinus
650 $aMadeira
650 $aTratamento
653 $aCompósito
653 $aFast growing pinewood
653 $aFree radical polymerisation
653 $aHeat catalyst
653 $aPolímero
653 $aPropriedade higroscópica
653 $aPropriedade termoquímica
700 1 $aSERRANO, L.
700 1 $aGATTO, D.
700 1 $aMAGALHAES, W. L. E.
700 1 $aLABIDI, J.
773 $tThermochimica Acta$gn. 596, p. 70-78, 2014.
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