Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/517
Title: A study of structural and spectral properties of ion-beam modified polyethylene terephthalate membrane
Authors: Maletić, Slavica 
Cerovic, Dragana D.
Dojcilovic, Jablan R.
Keywords: Dielectric spectroscopy;Infrared spectroscopy;Ion-implantation;Polyethylene terephthalate (PET);UV–Vis spectroscopy
Issue Date: 15-Feb-2019
Journal: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Abstract: 
In this study, we investigated a modification of the structure of polyethylene terephthalate (PET) membrane exposed to 100 keV N5+ ions with fluences varying from 1014 to 1016 ions/cm2. The changes in the properties of the ion-beam modified samples of PET membrane were analyzed by Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV–Vis) and dielectric spectroscopies. FTIR spectra showed a change in the intensity of the typical bands after the irradiation of the polymers. The results of the optical measurements showed that the increase in the ion irradiation fluence induced a decrease in the transmittance of the PET membrane. The estimated value of the energy band gap decreased with the increase of the fluence. A significant decrease of the energy band gap was observed for the ion beam fluence of 1016 ions/cm2. The dielectric measurements performed in a wide frequency band in the range from 20 Hz to 10 MHz and temperature range from 120 K to 400 K revealed that ion beam treatment with a fluence of 1016 ions/cm2 changed the characteristic temperature dependence of the dielectric loss tanδ (T).
URI: https://physrep.ff.bg.ac.rs/handle/123456789/517
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2018.12.053
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