Investigation of the Free Volume Changes in Thermally Treated Polyethylene by Positron Annihilation |
| W. Osoba Institute of Physics, Silesian University, Uniwersytecka 4, 40-007 Katowice, Poland |
| Full Text PDF |
| Positron lifetimes measurements in polyethylene were performed. Samples of the polyethylene were heated in the temperature range from 320 to 570 K. After cooling, the samples were used for the lifetime measurements in air at room temperature. A conventional fast-slow coincidence lifetime spectrometer was used for the measurements. Mean free volumes radii were calculated from the lifetime data. |
| DOI: 10.12693/APhysPolA.95.632 PACS numbers: 71.60.+z, 78.70.Bj |