The Influence of Physical Factors on Wool Fibre Colour Changes

Abstract

Wool fibre has it native colour, but it changes during storage, scouring, dyeing, bleaching, decatizing and other finishing processes. The aim of this work was to investigate the influence of physical factors such as temperature and humidity on the colour of wool fibres which differed in their initial colours. The data of investigations showed that treatment of wool fibre at relatively low temperature, i. e. 85 °C, and higher temperature i. e. 165 °C, changed wool fibre colour. Dry and especially wet wool fibres changed their colours more intensively prolonging heating time. Light wools remained lighter and after heating comparing with the yellowest wool. However, light wools had more propensity to yellow during heating.