Thermal expansion of irradiated polypropylene from 10-340 K

Jayanna, HS and Subramanyam, SV (1993) Thermal expansion of irradiated polypropylene from 10-340 K. In: Journal of Materials Science, 28 (9). pp. 2423-2427.

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Abstract

The coefficient of thermal expansion of gamma-irradiated polypropylene (PP) has been measured from 10-340 K by using the three-terminal capacitance technique. The samples were irradiated to 500 Mrad in air at room temperature with gamma rays from a $^{60}Co$ source at a dose rate of 0.26 Mrad $h ^{-1}$. The crystallinity of the sample was measured by X-ray diffraction technique. The crystallinity was found to decrease with radiation dose from 55% at 0 Mrad to 44.7% at 500 Mrad. The thermal expansion coefficient was found to be almost constant with radiation dose from 10-125 K and decreases with radiation dose from 125-34O K.

Item Type:	Journal Article
Publication:	Journal of Materials Science
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	26 Sep 2006
Last Modified:	19 Sep 2010 04:31
URI:	http://eprints.iisc.ac.in/id/eprint/8472

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