Indian Journal of Fibre & Textile Research
Vol. 31, June 2006, pp. 267-273


Varietal response of jute fibres with varying meshiness to alkali treatment:
Part I—Effect of alkali concentration and treatment temperature on
crimp development in jute fibres


R K Varshney,. R K Singh, A K Sengupta  & V K Kothari

Revised received 4 April 2005; accepted 11 April 2005

Alkali treatment of four varieties of jute fibres, namely W-4, TD-3, Desi and Mesta, with different meshiness levels has been carried out at three different conditions of concentration and temperature, namely 9% conc./2șC temp.(9/2), 18% conc./30șC temp. (18/30) and 18% conc./10șC temp. (18/10). Crimping behaviour in terms of decrimping extension, decrimping stress, decrimping energy and crimp stability has been studied. It is observed that under the condition 18/10, crimp development is maximum because of its inherent higher shrinkage potential. Decrimping energy is also found to be highest but the parameter crimp energy decay, having considerable practical importance and the indicator of crimp instability, comes out to be higher. However, for all practical purposes, considering other technical aspects, 18/10 condition gives satisfactory results in the crimp development.

Keywords: Decrimping, Hookean region, Jute, Load cycling, Meshiness index

IPC Code: Int. Cl.8 D01F11/00, D06M11/00