Review on Natural Dyes and Pigments and Its Application

**43**

**Chapter 2**

**Abstract**

review article.

**1. Introduction**

• No health hazard

• No effluent generation

• Very high sustainability

• Mild dyeing conditions

Substrates

*Virendra Kumar Gupta*

Fundamentals of Natural Dyes

The meticulous environmental standards in textiles and garments imposed by countries cautious about nature and health protection are reviving interest in the application of natural dyes in dyeing of textile materials. The toxic and allergic reactions of synthetic dyes are compelling the people to think about natural dyes. Natural dyes are renewable source of colouring materials. Besides textiles it has application in colouration of foods, medicine and in handicraft items. Though natural dyes are ecofriendly, protective to skin and pleasing colour to eyes, they are having very poor bonding with textile fibre materials, which necessitate mordanting with metallic mordants, some of which are not eco friendly, for fixation of natural dyes on textile fibres. So the supremacy of natural dyes is somewhat subdued. This necessitates newer research on application of natural dyes on different natural fibres for completely eco friendly textiles. The fundamentals of natural dyes chemistry and some of the important research work are therefore discussed in this

**Keywords:** colour fastness, dyeing, extraction of natural dyes, natural dyes

Natural dyes are having some inherent advantages:

• Easy extraction and purification

After the advent of mauveine by Henry Perkin in 1856 and subsequent commercialization of synthetic dyes had replaced natural dyes, and since then consumption and application of natural dyes for textiles got reduced substantially. In present scenario environmental consciousness of people about natural products, renewable nature of materials, less environmental damage and sustainability of the natural products has further revived the use of natural dyes in dyeing of textile materials.

and Its Application on Textile

## **Chapter 2**
