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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: |
12/11/2015 |
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Data da última atualização: |
03/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MATTOS, B. D.; CADEMARTORI, P. H. G. de; MISSIO, A. L.; GATTO, D. A.; MAGALHAES, W. L. E. |
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Afiliação: |
BRUNO D. MATTOS, Universidade Federal do Parana; PEDRO H. G. DE CADEMARTORI, Universidade Federal do Paraná; ANDRE L. MISSIO, Universidade Federal de Santa Maria; DARCI A. GATTO, Universidade Federal de Pelotas; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Wood-polymer composites prepared by free radical in situ polymerization of methacrylate monomers into fast-growing pinewood. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Wood Science and Technology, v. 49, n. 6, p. 1281-1294, Nov. 2015. |
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DOI: |
10.1007/s00226-015-0761-5 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate treatability, morphology and mechanical resistance of composites prepared by in situ polymerization of methyl methacrylate on Pinus taeda wood using glycidyl methacrylate and methacrylic acid as cross-linkers. Treatment consisted of impregnation by vacuum/pressure and polymerization at 90 C for 10 h using heat catalyst. The treatability was characterized by loads of monomers, conversion of monomers to polymers, weight percent gain, permanent swelling, and densification. The morphology was characterized by SEM images, X-ray diffraction, confocal Raman microscopy, and mechanical properties by static bending, shore D hardness and brittleness tests. Composites with cross-linkers showed the highest monomers retention, and the highest conversion. Brittleness of the composites increased significantly, modulus of elasticity increased from 17 to 32 %, flexural strength increased by 22.4?45.3 %, and shore D hardness increased between 60.2 and 89.6 %. The GMA cross-linker provided the highest increments for mechanical resistance. |
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Palavras-Chave: |
In situ polymerization; Metacrilato; Methacrylate; Pinewood; Polimerização in situ; Polímero; Tratamento de madeira; Wood polymer. |
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Thesagro: |
Madeira; Pinus Taeda. |
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Thesaurus Nal: |
wood treatment. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02029naa a2200313 a 4500
001 2028471
005 2016-02-03
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1007/s00226-015-0761-5$2DOI
100 1 $aMATTOS, B. D.
245 $aWood-polymer composites prepared by free radical in situ polymerization of methacrylate monomers into fast-growing pinewood.$h[electronic resource]
260 $c2015
520 $aThe aim of this study was to evaluate treatability, morphology and mechanical resistance of composites prepared by in situ polymerization of methyl methacrylate on Pinus taeda wood using glycidyl methacrylate and methacrylic acid as cross-linkers. Treatment consisted of impregnation by vacuum/pressure and polymerization at 90 C for 10 h using heat catalyst. The treatability was characterized by loads of monomers, conversion of monomers to polymers, weight percent gain, permanent swelling, and densification. The morphology was characterized by SEM images, X-ray diffraction, confocal Raman microscopy, and mechanical properties by static bending, shore D hardness and brittleness tests. Composites with cross-linkers showed the highest monomers retention, and the highest conversion. Brittleness of the composites increased significantly, modulus of elasticity increased from 17 to 32 %, flexural strength increased by 22.4?45.3 %, and shore D hardness increased between 60.2 and 89.6 %. The GMA cross-linker provided the highest increments for mechanical resistance.
650 $awood treatment
650 $aMadeira
650 $aPinus Taeda
653 $aIn situ polymerization
653 $aMetacrilato
653 $aMethacrylate
653 $aPinewood
653 $aPolimerização in situ
653 $aPolímero
653 $aTratamento de madeira
653 $aWood polymer
700 1 $aCADEMARTORI, P. H. G. de
700 1 $aMISSIO, A. L.
700 1 $aGATTO, D. A.
700 1 $aMAGALHAES, W. L. E.
773 $tWood Science and Technology$gv. 49, n. 6, p. 1281-1294, Nov. 2015.
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| Registros recuperados : 3 | |
| 1. |  | PAULA, R. C. de; PIRES, I. E.; BORGES, R. de C. G.; CRUZ, C. D. Predição de ganhos genéticos em melhoramento florestal. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 37, n. 2, p. 159-165, fev. 2002 Título em inglês: Prediction of genetic gains in forest improvement.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 2. | | CORNACCHIA, G.; CRUZ, C. D.; BORGES, R. de C. G.; PIRES, I. E.; LOBO, P. R. Variabilidade genética entre e dentro de procedências de pinheiros tropicais. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 33, n. 6, p. 919-928, jun. 1998 Título em inglês: Genetic variability between-and-within provenances of tropical pines.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 3 | |
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