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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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Registro original: |
Embrapa Florestas (CNPF) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
01/12/2009 |
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Data da última atualização: |
08/06/2018 |
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Autoria: |
CIVIDANES, F. J.; BARBOSA, J. C.; IDE, S.; PERIOTO, N. W.; LARA, R. I. R. |
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Afiliação: |
Francisco Jorge Cividanes, Universidade Estadual Paulista - Unesp/FCAV/DF; José Carlos Barbosa, UNESP/FCAV/Departamento de Ciências Exatas; Sérgio Ide, Agência Paulista de Tecnologia dos Agronegócios - APTA; Nelson Wanderlei Perioto, APTA; Rogéria Inês Rosa Lara, APTA. |
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Título: |
Faunistic analysis of Carabidae and Staphylinidae (Coleoptera) in five agroecosystems in northeastern São Paulo state, Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 8, p. 954-958, ago. 2009 |
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Idioma: |
Inglês |
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Notas: |
Títulos em português: Análise faunística de Carabidae e Staphylinidae (Coleoptera) em cinco agroecossistemas da Região Nordeste do Estado de São Paulo. |
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Conteúdo: |
The objective of this study was to determined species composition and community structure of Carabidae and Staphylinidae in five areas of forest fragment and soybean/corn crops or orange orchard, from December 2004 to May 2007. Beetles were captured in pitfall traps distributed along two parallel transects of 200 m in length, placed across crop land/forest boundary fragment, with 100 m each. The Shannon-Wiener diversity and evenness indexes and Morisita similarity index were calculated. The carabids Abaris basistriatus Chaudoir, Calosoma granulatum Perty, Megacephala brasiliensis Kirby, Odontochila nodicornis (Dejean) and Selenophorus seriatoporus Putzeys. are dominant and are widely distributed in northeastern São Paulo state, Brazil. Point-scale species diversity was greatest at the transition between forest fragment and cultivated area. The carabid and staphylinid communities of the forest fragment were more similar to the community of orange orchard than that of soybean/corn crops. |
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Palavras-Chave: |
Agroecossistemas da Região Nordeste do Estado de São Paulo; Análise faunística de Carabidae; Análise faunística de Staphylinidae; Diversidade de espécies de carabídeos e estafilinídeos; Divesity; Similaridade; Similarity. |
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Thesagro: |
Citrus Sinensis; Glycine Max; Plantio Direto; Zea Mays. |
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Thesaurus NAL: |
No-tillage. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/106035/1/Faunistic.pdf
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Marc: |
LEADER 02209naa a2200325 a 4500
001 1660894
005 2018-06-08
008 2009 bl uuuu u00u1 u #d
100 1 $aCIVIDANES, F. J.
245 $aFaunistic analysis of Carabidae and Staphylinidae (Coleoptera) in five agroecosystems in northeastern São Paulo state, Brazil.
260 $c2009
500 $aTítulos em português: Análise faunística de Carabidae e Staphylinidae (Coleoptera) em cinco agroecossistemas da Região Nordeste do Estado de São Paulo.
520 $aThe objective of this study was to determined species composition and community structure of Carabidae and Staphylinidae in five areas of forest fragment and soybean/corn crops or orange orchard, from December 2004 to May 2007. Beetles were captured in pitfall traps distributed along two parallel transects of 200 m in length, placed across crop land/forest boundary fragment, with 100 m each. The Shannon-Wiener diversity and evenness indexes and Morisita similarity index were calculated. The carabids Abaris basistriatus Chaudoir, Calosoma granulatum Perty, Megacephala brasiliensis Kirby, Odontochila nodicornis (Dejean) and Selenophorus seriatoporus Putzeys. are dominant and are widely distributed in northeastern São Paulo state, Brazil. Point-scale species diversity was greatest at the transition between forest fragment and cultivated area. The carabid and staphylinid communities of the forest fragment were more similar to the community of orange orchard than that of soybean/corn crops.
650 $aNo-tillage
650 $aCitrus Sinensis
650 $aGlycine Max
650 $aPlantio Direto
650 $aZea Mays
653 $aAgroecossistemas da Região Nordeste do Estado de São Paulo
653 $aAnálise faunística de Carabidae
653 $aAnálise faunística de Staphylinidae
653 $aDiversidade de espécies de carabídeos e estafilinídeos
653 $aDivesity
653 $aSimilaridade
653 $aSimilarity
700 1 $aBARBOSA, J. C.
700 1 $aIDE, S.
700 1 $aPERIOTO, N. W.
700 1 $aLARA, R. I. R.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 44, n. 8, p. 954-958, ago. 2009
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Embrapa Unidades Centrais (AI-SEDE) |
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