Title
Dyeing of chemical pulp with natural dyes
Authors
SOFIA PAPADAKI MAGDALINI KROKIDA DIMITRIOS ECONOMIDES and EMMANUEL KOUKIOS

Received April 11, 2013
Published Volume 48 Issue 3-4 March-April
Keywords cellulosic fibers, chemical pulp, dyeing, dyestuff plant materials, extraction, natural colorants

Abstract
In the present study, plant materials of European flora were investigated as sources of natural dyes in cellulosic fiber dyeing. Specifically, the case of chemical pulp dyeing, using plant materials rich in polyphenolic compounds, such as tannins, anthocyanins and other flavonoids, which are natural colorants, was studied. The most efficient conditions for the aqueous extraction of natural colorants and chemical pulp dyeing process were determined for each plant material, separately. Apart from the final dyeing result, the low cost and minor environmental impact were also taken into consideration during the selection of the most efficient conditions. Therefore, conditions such as short residence time and low temperature were preferred.