Variation in cryst
Variation in crystallite shape ellipsoid in non-mulberry silk fibres
H Somashekarappa, S S Mahesh, R Somashekar & Sangappa
Received 8 August 2004; accepted 19 November 2004
Wide angle X-ray scattering data recorded from the coarse and fine fibres of mulberry and non-mulberry silk, like muga, tassar and eri, have been used along with exponential, Reinhold and Lognormal functions for crystal size distributions to determine the microstructural parameters and hence to compute the shape of the crystallite ellipsoid. The estimated microstructural parameters have been correlated with the reported physical parameters like tenacity and toughness of silk fibres. It is observed that the tenacity decreases with the increase in crystal size for both mulberry and non- mulberry silk fibres, which essentially reflects the fact that ordering in the lattice may not be a favoured factor in the textile industry.
Keywords: Crystallite shape, Silk fibre, Tensile strength, Wide angle X-ray scattering
IPC Code: Int. Cl.7 D06H3/00, G01N23/00, G01N33/36
Vol. 30, September 2005, pp. 315-323