Oxygen plasma surface interaction in treatments of polyolefines

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Thierry Belmonte (Autor) Outra; Carlos Daniel Diogo Matias Pintassilgo (Autor) FEUP; Thierry Czerwiec (Autor) Outra; G. Henrion (Autor) Outra; V. Hody (Autor) Outra; JM Thiebaut (Autor) Outra; J. Loureiro (Autor) Outra

Revista

Título: Surface and Coatings Technology

Vol. 200 Nº 1

Páginas: 26-30

ISSN: 0257-8972

Editora: Elsevier

Indexação

ISI Web of Science

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

Abstract (EN): In this work, etch rates of hexatriacontane, used as a model polyolefins, as high as similar to 10 mg s(-1) m(-2) in late O-2 post-discharge are obtained at 333 K where no significant UV nor VUV irradiation occurs. Introducing N-2 in the gas mixture helps us to control the ratio of O/O-2 densities, which is shown here to play a key role in the functionalization or etching of the HTC. The oxygen atoms are required for any further modification of the HTC because they initiate the formation of the radical chains by abstraction of one hydrogen. However, O((3)p) atoms do not contribute directly to break the polymer chain close to room temperature but they can functionalize it. It is O-2 in all states that is the important reactive species for the etching because of the role played by the peroxide species on the scission of the carbonaceous chains. The etching step is related to the O/O-2 ratio.

Idioma: Português

Tipo (Avaliação Docente): Científica