| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8251780 | Radiation Physics and Chemistry | 2018 | 13 Pages |
Abstract
High and ultra-high molecular weight polyethylenes were gamma-irradiated with doses up to 600Â kGy. The changes in the material properties were analysed using DSC, DMA, IR spectroscopy, as well as measurements of density and insoluble content. The irradiation led to an increase of the degree of crystallinity because of chain scissions during irradiation, leading to shorter and thus more mobile chains. Both the plateau value of the shear modulus Gâ² and the insoluble content increased with irradiation dose, indicating the formation of additional crosslinks. Furthermore, IR spectroscopy revealed irradiation induced oxidation and the formation of double bonds, indicating that some of the hydrogen atoms responsible for the neutron shielding capability have been released.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Anja Kömmling, Kerstin von der Ehe, Dietmar Wolff, Matthias Jaunich,