Dyeing of S/J Cotton Knit Fabric with Natural Dye Extracts from Green Walnut Shells: Assessment of Mordanting Effect on Fastness Properties

Zakaria &Nbsp,Md Eanamul Haque Nizam,Md Hasan Al Mamun,Md Abu Yousuf,Lutfor Rahman,Md Raza Miah,Ramjan Ali

doi:10.4236/jtst.2017.32002

Abstract

In this study, aqueous extraction method is used because of its high extraction ratio, light fastness and also functional properties. In 1st phase, for dyeing S/J cotton knit fabric with green walnut power ferrous sulfate is considered as a mordant. In this study, three different mordanting methods such as pre-, meta-, and post-mordanting are conveyed the dyeing process with the state of metallic mordant and without metallic salt mordants. In 2nd phase, in dyeing for fixation ferrous sulfate was considered as mordants. Furthermore, the analysis and evaluation of each colour dyed material was done through following two terms for instance CIELAB (L*, a*, and b*) and K/S values. According to AATCC test methods, colour fastness to washing, crocking, perspiration of the dyed samples is determined whereas according to the ISO standard, the colour fastness to light was estimated and tested. When dyeing was carried out on S/J cotton knit fabric through considering optimum parameter like at 80&degC for 60 min and at pH 4 which showed optimum results. From the results we can see, very good wash fastness was obtained while there is no fading of the colour, whereas the outstanding and moderate level of colour fastness to light and crocking is achieved.

Highlights

The art of dyeing is as old as our civilization
Green walnut shell dyes were extracted by using aqueous extraction methods that is ancient method
During the aqueous extraction process, at first dried pieces of green walnut shell were kept at 28 ̊C temperature for 24 hours it was used for dye extraction

Summary

Introduction

Dyed textile remnants found during archaeological excavations at different places all over the world provide evidence to the practice of dyeing in ancient civilizations [1]. Natural dyes repeatedly were used only for colouring of textiles from ancient times till the nineteenth century. There is a wide scope to use natural dyes It can be used in food, leather, printing ink, plastics, furniture, from [4] natural fibers (cotton, wool, silk, ramie etc.) [6] [7] [8] [9], synthetic fibers (polyester, nylon, acrylic etc.) [10] and even in dye sanitized solar cells. Natural dyes generally require mordant [19] It is a big challenge for textile dyer to acceptable properties like colour fastness to wash, light, rubbing etc. Cellulose fibers are dyed in presence of excessive amount of salt and fixed under alkali [21] [22]

Methods

Results

Conclusion