The influence of environment on discharging currents in polyethylene terephthalate

• Published in: 10th International Symposium on Electrets (ISE 10). Proceedings (Cat. No.99 CH36256) pp. 111 - 114
• Main Authors: Neagu, E.R., Marat-Mendes, J.N., Das-Gupta, D.K., Neagu, R.M.
• Format: Conference Proceeding
• Language: English
• Published: New York NY IEEE 1999
• Subjects: Charge measurement; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Current measurement; Dielectric loss and relaxation; Dielectric properties of solids and liquids; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Electrodes; Exact sciences and technology; Gases; Isothermal processes; Physics; Polarization; Polyethylene; Polymers; organic compounds; Positron emission tomography; Stability; Temperature distribution; Thermostimulated depolarization; Discharge current; Polymers; Environmental effects
• ISBN: 9780780350250; 0780350251
• DOI: 10.1109/ISE.1999.831957

In order to understand the nature of the origin of the released current in the temperature range from room temperature up to 220 /spl deg/C, TSDC and the isothermally final discharging current (IFDC) have been measured, in vacuum and in different ambient gases for PET specimens. The behavior of the samples polarized in oxygen, in nitrogen and in ambient air was analyzed. The contribution of the heterocharge, the homocharge and the absorbed gases to the measured current is analyzed.