Latent track radius of PTFE irradiated with high energy ion beam
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
29/10/2013
29/10/2013
02/08/2013
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Resumo |
PTFE foils were irradiated with different ion beams (Xe, Au and U) with energies up to 1.5 GeV and fluences between 1 x 10(8) and 1 x 10(13) ions/cm(2) at room temperature. The induced modifications in the polymer were analyzed by FTIR, UV-Vis spectroscopy, and XRD. In the FTIR spectra, the CF2 degradation accompanied by the formation of CF3 terminal and side groups were observed. In the UV-Vis spectra, the observed increase in the absorption at UV wavelengths is an indication of polymer carbonization. From XRD, the amorphization of the material was evidenced by the decrease in the intensity of the main diffraction peak. An exponential fit of the intensity of the IR absorption peaks resulted in the following values: 2.9 +/- 0.8; 4.5 +/- 0.9 and 5.6 +/- 0.8 nm for the latent track radius after irradiation with Xe, Au and U beams, respectively. (C) 2011 Elsevier B.V. All rights reserved. |
Identificador |
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, AMSTERDAM, v. 273, n. 41306, supl. 1, Part 2, pp. 55-57, FEB 15, 2012 0168-583X http://www.producao.usp.br/handle/BDPI/36293 10.1016/j.nimb.2011.07.037 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV AMSTERDAM |
Relação |
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS |
Direitos |
closedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #PTFE #HEAVY IONS IRRADIATION #POLYMER DAMAGE #LATENT ION TRACKS #INDUCED CROSS-LINKING #POLYTETRAFLUOROETHYLENE #POLYMERS #INSTRUMENTS & INSTRUMENTATION #NUCLEAR SCIENCE & TECHNOLOGY #PHYSICS, ATOMIC, MOLECULAR & CHEMICAL #PHYSICS, NUCLEAR |
Tipo |
article original article publishedVersion |