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Artigos Técnicos

Artigo Científico | Geral Superfícies e Filmes Finos | Português | 10/10/1999

Caracterização Físico-Química da Superfície de Filmes de Poli(Tereftalato de Etileno)

Physical chemical characterization on the surface of Poly(ethyleneterephthalate) film.

Autores: Augusto Knoechelmann, César A. M. Abreu, Georgia V. V. V. Pinto, Yêda Medeiros Bastos de Almeida

Palavras-chave: caracterização, filme., morfología, poli(tereftalato de etileno), rugosidade

Resumo: Caracterização Físico-Química da Superfície de Filmes de Poli(Tereftalato de Etileno)

Abstract: The current work is concerned with some techniques which allow the characterization of PET film surface, i.e: refractometry, roughness, friction coefficients analysis and contact angle analysis. The samples analysed were homopolymer, corona-treated and a poly(ethylene terephthalate-co-1,4 ciclohexanedimethanol) films. The corona-treated PET film showed higher surface tension value due to the major contribution on the polar groups. The copolyester film structure showed to be much less crystalline than the others, which have been obtained by refractive index measurements. These amorphous structures and the higher tension level of the treated films should provide a better understanding of the adhesion phenomena.

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