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Low temperature crystallographic data on Kevlar 49 fibres

Iyer, RV and Sooryanarayana, K and Row, Guru TN and Vijayan, K (2003) Low temperature crystallographic data on Kevlar 49 fibres. In: Journal of Materials Science (full set), 38 (1). pp. 133-139.

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Abstract

Using X-ray diffraction data, the behaviour of Kevlar 49 fibres at low temperatures, up to -100degreesC, has been analysed. During cooling, the basal plane of the monoclinic unit cell shrinks whereas the c- (unique, chain axis) length is not significantly affected. In contrast, in the return heating cycle to ambient temperature, the basal plane expands and contraction occurs along the chain direction. The unit cell registers a reduction in volume in both the cooling and heating cycles. Conspicuously, after a cycle of cooling and heating, the unit cell does not return to its initial volume. (C) 2003 Kluwer Academic Publishers.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 26 Aug 2011 10:48
Last Modified: 26 Aug 2011 10:48
URI: http://eprints.iisc.ernet.in/id/eprint/40129

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