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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ohki, Y. Kim, E. Kato, G. Ohara, T. |
| Copyright Year | 1997 |
| Description | Author affiliation: Dept. of Electr, Electron. & Comput. Eng., Waseda Univ., Tokyo, Japan (Ohki, Y.) |
| Abstract | Effect of /spl gamma/-ray irradiation on the charge behavior of polyethersulfone (PES) is investigated through the measurement of thermally stimulated current (TSC). Each sample is irradiated by /spl gamma/-rays in air at room temperature to various total doses less than 30 kGy. In the TSC spectra obtained after a poling process at 37/spl deg/C, /spl beta/ peak at 150/spl deg/C increases first with an increase in the dose up to 0.61 kGy, and then decreases. The /spl gamma/ peak which is not observed in the non-irradiated sample appears at 100/spl deg/C in the irradiated sample. Similarly to the /spl beta/ peak, the /spl gamma/ peak increases in the low dose region and decreases if the irradiation dose exceeds 1 kGy. When the sample is poled at 120/spl deg/C, the /spl gamma/ peak is not observed and the /spl beta/ peak decreases monotonically as the dose increases. It is considered that scission of polymer main chains occurs during the /spl gamma/-ray irradiation and that rearrangement of main chains from a loose packing to a more rigid packing occurs while the sample is heated during the TSC measurement. This molecular rearrangement is considered to be the origin of the /spl gamma/ peak and also related to the decrease of the charge quantity of TSC. |
| Starting Page | 798 |
| Ending Page | 801 |
| File Size | 375078 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780326512 |
| DOI | 10.1109/ICPADM.1997.616557 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1997-05-25 |
| Publisher Place | South Korea |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Temperature Polymers Pulse measurements Thermal engineering Current measurement Charge measurement Electric variables measurement Chemical processes Space charge Pulsed electroacoustic methods |
| Content Type | Text |
| Resource Type | Article |
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