Thermal expansion of irradiated polyethylene from 10 to 340 K
Article first published online: 11 MAR 2003
Copyright © 1993 John Wiley & Sons, Inc.
Journal of Polymer Science Part B: Polymer Physics
Volume 31, Issue 9, pages 1095–1098, August 1993
How to Cite
Jayanna, H. S. and Subramanyam, S. V. (1993), Thermal expansion of irradiated polyethylene from 10 to 340 K. J. Polym. Sci. B Polym. Phys., 31: 1095–1098. doi: 10.1002/polb.1993.090310905
- Issue published online: 11 MAR 2003
- Article first published online: 11 MAR 2003
- Manuscript Accepted: 30 DEC 1992
- Manuscript Revised: 27 OCT 1992
- Manuscript Received: 29 DEC 1991
- thermal expansion
The coefficient of thermal expansion of γ-irradiated polyethylene has been measured from 10 to 340 K by using the three-terminal capacitance technique. The samples are irradiated to 500 Mrad in steps of 100 Mrad in air at room temperature with γ-rays from a Co60 source at a dose rate of 0.3 Mrad/h. The crystallinity of the sample is measured by x-ray diffraction. The crystallinity is found to decrease with radiation dose. The thermal expansion coefficient is found to be constant with radiation doses from 10 to 110 K and decreases with doses from 110 to 340 K. © Wiley & Sons, Inc.