| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9817896 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2005 | 5 Pages |
Abstract
The modifications of copolymer of ethylene and norbornene induced by irradiation with 60 keV N4+ ions to the fluencies of 1.0 Ã 1016 ions cmâ2 have been investigated using DSC, TGA, UV-spectroscopy, direct current surface resistivity and impedance measurements. The measured heat and thermal properties reveal remarkable stability against degradation. Copolymer properties studied at low electric field strengths were directly related to the modified molecular structure. The decrease in electrical resistivity was mainly attributed to conjugated double bond formation observed by ultraviolet spectroscopy. AC conductivity and capacitance obtained from the real and imaginary part of admittance varies with frequency. The movement of charge carriers may be related to relaxation phenomena in the material and is similar to those observed in many amorphous semiconductors.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Zorica KaÄareviÄ-PopoviÄ, Nikola Tjapkin, Milorad SiljegoviÄ, Ilija DraganiÄ,