Data/hora: 09/06/2024 21:47:40

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 12/04/2018
Data da última atualização: | 08/05/2018
Autoria: | CADEMARTORI, P. H. G. de; SOUZA JUNIOR, L. R.; BLANCHET, P.; MAGALHAES, W. L. E.; BOLZON de MUNIZ, G. I.
Afiliação: | PEDRO HENRIQUE G. DE CADEMARTORI, UFPR; LUIZ ROBERTO SOUZA JUNIOR, UFPR (PIPE); PIERRE BLANCHET, Laval University; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; GRACIELA INES BOLZON DE MUNIZ, UFPR.
Título: | The use of low-pressure plasma on enhancing the attachment of Al2O3 nanoparticles to wood-plastic composites.
Ano de publicação: | 2018
Fonte/Imprenta: | Journal of Wood Chemistry and Technology, v. 38, n. 2, p. 71-83, 2018.
DOI: | 10.1080/02773813.2017.1372477
Idioma: | Inglês
Conteúdo: | Wood?plastic composites (WPC) are widely used for many purposes due to their interesting properties, but they have poor surface adhesion due to the chemical inertness of the matrix. Thus, in this work, the effect of plasma treatment on the WPC was investigated regarding its influence in the aluminum oxide (Al2O3) nanoparticles attachment to the surface. WPC were prepared in a polypropylene (PP) matrix, plasma-treated at 100 W for 600 s, and then covered with Al2O3 nanoparticles dispersion. TheWPC/Al2O3 surfaces have been investigated by means of morphology, surface roughness, chemical structure, wettability, and nanohardness. Plasma treatment improved the attachment of Al2O3 onto WPC, which was confirmed by the higher presence of aluminum and oxygen-containing functional groups and the reduction of the intensity of peaks of methylene (CH2) and methyl (CH3) groups on the WPC surface. The higher surface reactivity of plasma-treated WPC resulted in a better distribution of the nanoparticles over the entire surface. In addition, plasma treatment avoided the formation of coffee-ring phenomenon but it was able to create cone-like structures on theWPC, increasing the surface roughness due to the etching effect and the attachment of Al2O3 nanoparticles. Plasma treatment followed by Al2O3 nanoparticles attachment increased the wettability, hardness, and elastic modulus of WPC at nanometric scale.
Palavras-Chave: | Compósito; Glow discharge; RF plasma; Surface treatment; Tratamento de superfície.
Thesagro: | Óxido de alumínio.
Thesaurus Nal: | Aluminum oxide; Composite materials.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (56321-1) - UPC - AP - DD -  -  -  - DIS