Bojenje tekstila prirodnim bojama

Sonja Jordeva,Marija Kertakova,Kiro Mojsov,Silvana Zhezhova,Sashka Golomeova-Longurova

doi:10.5937/tekstind2004012j

Abstract

In recent years there has been a great interest in the application of natural dyes in dyeing textiles due to their biodegradability and high compatibility with the environment. According to the experts, there is a great potential for using natural dyes to the extent that in some areas they can very easily replace synthetic ones. This paper reports the studies available on the characterization, classification and analysis of natural dyes; extraction of dyes from onion's outer shell and effects of different mordants and mordanting methods on the color shade. From an environmental point of view, replacing synthetic dyes with natural ones is not only a strategy to reduce risk and pollutants, but also an opportunity for new markets and jobs.

Highlights

INTRODUCTIONTextile materials (natural and synthetic) used to be coloured for value addition, look and desire of the customers
Textile materials used to be coloured for value addition, look and desire of the customers
The results show that the shade of the obtained dye is a function of the type of the mordant and of the dye

Summary

INTRODUCTION

Textile materials (natural and synthetic) used to be coloured for value addition, look and desire of the customers. The textiles were dyed with dyes of natural sources until the synthetic dyes were invented and commercialized. Dyes of natural sources were replaced by synthetic dyes because the new dyes could be mass produced with consistent shades of color. The global consumption of textiles is estimated at around 30 million tonnes The dyeing of this huge amount of textiles needs around 700,000 tonnes of dyes which causes release of a waste into the environment. Such a huge amount of required textiles materials cannot be dyed with natural dyes alone. Natural dyes are mostly non-substantive and must be applied on textiles by the help of mordants, usually a metallic salt, having an affinity for both the colouring matter and the fibre. While some experts are focusеd on the many difficulties in applying natural dyes to textile dyes, others emphasize the advantages of technology based on sustainable sources [8]

CLASSIFICATION OF NATURAL DYES

CONCLUSION