Using shifts in the electronic emission curve to evaluate polymer surface degradation
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Data
2001-01-01
Autores
Chinaglia, D. L.
Hessel, R.
Oliveira, O. N.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The polymer surface degradation and/or modification evolution of Teflon FEP and Mylar C films caused by a low energy electron beam were analyzed using a new method that consists in measuring the second crossover energy shift in the electronic emission curve. Upon prolonged irradiation, the second crossover energy shifts irreversibly to lower values in Teflon FEP but to higher values in Mylar C, indicating distinct mechanisms of surface degradation for the two polymers. The method represents a relatively inexpensive way to monitor early stages of surface degradation since the secondary electron emission comes from a maximum depth below the geometric surface of 100 mn in insulators. (C) 2001 Elsevier B.V. Ltd. All rights reserved.
Descrição
Palavras-chave
polymer degradation, electron beam irradiation, secondary electrons
Como citar
Polymer Degradation and Stability. Oxford: Elsevier B.V., v. 74, n. 1, p. 97-101, 2001.