Natural dyes for textile - a contribution to creativity and sustainability

Abstract

Dyeing of wool, silk, polyamide and cotton fabrics with natural vegetable dyes obtained from biowaste was carried out. The following raw materials were used as a source of dye: pomegranate peel, red onion shells, green walnut shells and young walnut leaves. Pre-treatment of the material was performed with metal salts (mordants): potassium aluminum sulfate dodecahydrate, copper(II) sulfate pentahydrate and iron(II) sulfate heptahydrate. The research of ecologically and economically acceptable painting process was carried out with the aim of achieving optimal coloration quality. To the obtained samples the color was objectively evaluated according to the CIEL*a*b* system and the color differences were determined depending on the mordanting process as well as color fastness to washing. The manuscript presents the possibilities of achieving color hues on the different types of fabrics and with the application of natural dyes obtained from bio-waste, which could achieve commercial development.