Abstract

Jute-cotton and jute-wool union fabrics have been printed with colorant extracted fromRheum emodiwith guar gum and albumin as thickening agents and aluminium sulphate, copper sulphate, and ferrous sulphate as mordants. Printing withRheum emodicolorant with different mordants resulted in different shades ranging from yellowish brown, deep brown, reddish brown, and gray shades to olive black. TheK/Svalue showed that mordants, namely, CuSO4and FeSO4, exhibited high colour absorption regardless of the nature of material used. All the printed samples have good to excellent wash, rubbing and light fastness properties regardless of the nature of materials, mordants, and thickeners used. Guar gum is closely at par with albumin as a thickening agent and considering the cost and availability of raw material, guar gum is the better choice for the textile industry.

Highlights

  • A Study on Coloring Properties of Rheum emodi on Jute Union FabricsReceived 28 September 2013; Revised 4 December 2013; Accepted 26 December 2013; Published 11 February 2014

  • Renewable, biodegradable, and sustainable natural fibers and natural colorants could be potential substitutes for energyintensive and petrochemical-based synthetic fibers and colorants in many applications and serve as an effective way of reducing the impact textiles have on the environment

  • The present study examines the coloring properties of natural colorant Rheum emodi on jute/cotton and jute/wool union fabrics and compares the performances of albumin and guar gum as thickening agents along with aluminium sulphate, copper sulphate, and ferrous sulphate as mordants

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Summary

A Study on Coloring Properties of Rheum emodi on Jute Union Fabrics

Received 28 September 2013; Revised 4 December 2013; Accepted 26 December 2013; Published 11 February 2014. Jute-cotton and jute-wool union fabrics have been printed with colorant extracted from Rheum emodi with guar gum and albumin as thickening agents and aluminium sulphate, copper sulphate, and ferrous sulphate as mordants. Printing with Rheum emodi colorant with different mordants resulted in different shades ranging from yellowish brown, deep brown, reddish brown, and gray shades to olive black. The K/S value showed that mordants, namely, CuSO4 and FeSO4, exhibited high colour absorption regardless of the nature of material used. All the printed samples have good to excellent wash, rubbing and light fastness properties regardless of the nature of materials, mordants, and thickeners used. Guar gum is closely at par with albumin as a thickening agent and considering the cost and availability of raw material, guar gum is the better choice for the textile industry

Introduction
Materials and Methods
Methods
Results and Discussion
Conclusions
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