A Novel Method of Dyeing Nylon 6, 6 with Cold Brand Reactive Dyes and Assessment of its Fastness Properties

Sumithra M Arasi D

doi:10.4172/2165-8064.s2-002

Abstract

Nylon is a synthetic fiber made from petroleum products which was developed as an alternative to silk. Nylon is valued for its light weight, incredible tensile strength, durability, and resistance to damage. It also takes dye easily, making the fabric available in a wide array of colours for consumers. Nylon has conventionally been dyed by using Acid dyes on a major extent. In this study Nylon 6,6 was dyed with commercial di-chlorotriazinyl reactive dyes .using 100% nylon woven fabric was taken for this study. Nylon fabric GSM was 50 g/m2, EPI-20 and PPI-32. The pH was kept at 4 and the temperature was maintained at 98°C, this temperature was used in subsequent experiments. The blue reactive dyes and acid dyes are used for dyeing and it was concluded as good to excellent fastness to washing and rubbing. And light fastness was almost equal for both reactive dyed and acid dye. In acid and reactive dyes Blue MR had good colour variation,good colour strength.

Highlights

Nylon is valued for its light weight, incredible tensile strength, durability, and resistance to damage
High wet fastness is derived from dyes covalently bound to the fibre. 1t is known that the reactive dyes developed for cellulosic fibres or for wool can be applied at the boil to nylon under weakly acidic conditions and that covalent bonds form between the dye and the amino groups of nylon, without an alkaline fixation step
The blue MRdyes used for dyeing it has well to excellent fastness to washing and rubbing

Summary

Introduction

Nylon is valued for its light weight, incredible tensile strength, durability, and resistance to damage. It takes dye making the fabric available in a wide array of colors for consumers [1]. High wet fastness is derived from dyes covalently bound to the fibre. 1t is known that the reactive dyes developed for cellulosic fibres or for wool can be applied at the boil to nylon under weakly acidic conditions (pH 4.0-6.0) and that covalent bonds form between the dye and the amino groups of nylon, without an alkaline fixation step. Since reactive dyes typically do not include heavy metals such as chromium, the characteristically high wet fastness of the dyes comes with the concomitant advantages of brightness and low environmental impact. The commercialization of reactive dyes for nylon has not gained widespread success [3]

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