Artículos de revistas
Surface modifications on Teflon FEP and Mylar C induced by a low energy electron beam: a Raman and FTIR spectroscopic study
Fecha
2002-01-01Registro en:
Molecular Crystals and Liquid Crystals. Abingdon: Taylor & Francis Ltd, v. 374, p. 577-582, 2002.
1058-725X
10.1080/10587250210474
WOS:000175887000087
8870539749821067
Autor
Universidade Estadual Paulista (Unesp)
Univ Windsor
Universidade de São Paulo (USP)
Institución
Resumen
The surface modifications induced on Teflon FEP and Mylar C polymer films by a low energy electron beam are probed using Raman and FTIR spectroscopy. The electron beam, which does not affect the Mylar C, surface, may break the copolymer chain into its monomers degrading the Teflon FEP surface. For Mylar C the electron beam decreases the roughness of the polymer surface. This difference in behavior may explain recent results in which the surface modifications investigated by measuring the second crossover energy shift in the electronic emission curve differed for the two polymers (Chinaglia et al [1]). In addition, the Raman data showed no evidence of carbon formation for either polymer samples, which is explained by the fact that only a low energy electron beam is used.