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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: |
09/02/2015 |
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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: |
CADEMARTORI, P. H. G. de; BOLZON de MUNIZ, G. I.; MAGALHAES, W. L. E. |
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Afiliação: |
Pedro Henrique Gonzalez de Cademartori, Doutorando da UFPR; Graciela Inês Bolzon de Muniz, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Changes of wettability of medium density fiberboard (MDF) treated with He-DBD plasma. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Holzforschung, v. 69, n. 2, p. 187-192, 2015. |
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DOI: |
10.1515/hf-2014-0017 |
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Idioma: |
Inglês |
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Conteúdo: |
The effects of two power levels (50 and 150 W) and five time levels (10, 20, 40, 60 and 120 s) of glow discharge in helium dielectric barrier discharge (He-DBD) has been investigated in the context of surface modification of medium density fiberboard (MDF) panels. He-DBD elevated the surface wettability of MDF panels as assessed by dynamic contact angle (CA) measurements including the determination of surface free energy, droplet volume and spreading contact area of droplets. The chemical changes of the MDF surfaces were also characterized by X-ray photoelectron spectroscopy (XPS). Expectedly, the apparent CA and droplet volume decreased with increasing power and time of glow discharge, mainly at the 150 W power level. The oxygen content of the surfaces, the surface free energy and the spreading contact area increased upon treatment. At higher energy levels the treatment time could be reduced, which is essential for future applications in industrial processes. |
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Palavras-Chave: |
Ângulo de contato aparente; Apparent contact angle; Dielectric barrier discharge; MDF; Modificação da superfície; Molhabilidade; Surface free energy; Surface modification; XPS. |
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Thesagro: |
Plasma; Tratamento. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01845naa a2200289 a 4500
001 2008092
005 2016-02-03
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1515/hf-2014-0017$2DOI
100 1 $aCADEMARTORI, P. H. G. de
245 $aChanges of wettability of medium density fiberboard (MDF) treated with He-DBD plasma.$h[electronic resource]
260 $c2015
520 $aThe effects of two power levels (50 and 150 W) and five time levels (10, 20, 40, 60 and 120 s) of glow discharge in helium dielectric barrier discharge (He-DBD) has been investigated in the context of surface modification of medium density fiberboard (MDF) panels. He-DBD elevated the surface wettability of MDF panels as assessed by dynamic contact angle (CA) measurements including the determination of surface free energy, droplet volume and spreading contact area of droplets. The chemical changes of the MDF surfaces were also characterized by X-ray photoelectron spectroscopy (XPS). Expectedly, the apparent CA and droplet volume decreased with increasing power and time of glow discharge, mainly at the 150 W power level. The oxygen content of the surfaces, the surface free energy and the spreading contact area increased upon treatment. At higher energy levels the treatment time could be reduced, which is essential for future applications in industrial processes.
650 $aPlasma
650 $aTratamento
653 $aÂngulo de contato aparente
653 $aApparent contact angle
653 $aDielectric barrier discharge
653 $aMDF
653 $aModificação da superfície
653 $aMolhabilidade
653 $aSurface free energy
653 $aSurface modification
653 $aXPS
700 1 $aBOLZON de MUNIZ, G. I.
700 1 $aMAGALHAES, W. L. E.
773 $tHolzforschung$gv. 69, n. 2, p. 187-192, 2015.
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| 1. |  | GONÇALVES, F. P.; LOURENÇO, S. A.; STUCHI, E. S.; HAU, B.; AMORIM, L. Comparative analysis for quantification of citrus variegated chlorosis in the field. Scientia Agricola, Piracicaba, Braz., v. 68, n. 5, p. 562-565, September/October 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| Registros recuperados : 6 | |
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