Salt-free dyeing of cotton fabric modified with prepared chitosan-poly propylene imine dendrimer using direct dyes


Journal: Vol.11, No.1, Winter 2018 - Article 3   Pages :  21 Until 32



Article Code:
PCCC-2017-09-20-367

Authors:
Moosa Sadeghi Kiakhani: Institute for Color Science and Technology - Department of Organic Colorants
Siyamak Safapour: Tabriz Islamic Art University - Faculty of Carpet


Article's abstract:

This study presents a novel method for eco-friendly dyeing of cotton fabrics with direct dyes. Cotton fabric modified with chitosan-poly propylene imines dendrimer CS-PPI, and its dyeing and fastness properties were investigated using three direct dyes. The impacts of important factors, i.e., CS-PPI concentration, dye concentration, dyeing time, dyeing temperature, and salt concentration were investigated and optimized. Results showed that cotton treatment with optimum CS-PPI concentration 15 owf significantly improved dye up-take and decreased effective dye concentration required to obtain the more color depth. Also, optimum dyeing time and temperature were reduced ~50 and ~20˚C, respectively. Moreover, salt was eliminated from cotton dyeing process with direct dyes and “salt-free dyeing” was therefore developed. Colorimetric and color fastness data emphasized that this treatment had no negative effect on the hue and color fastness properties of dyed samples. So, it was concluded that this new eco-friendly process can help to save considerable amount of time, energy, chemicals, and dyeing costs, and also can remedy the associated dyeing effluent problems from dyeing of cotton with direct dyes.


Keywords:
Cotton fabric; Modification; Chitosan-dendrimer hybrid; Salt-free Dyeing; Direct dyes.

References:
1. J. Shore, Cellulosics Dyeing, Society of Dyers and Colourists, (1995). 2. W. Ingamells, Colour for textiles A user’s handbook, Society of Dyers and Colourists, (1993). 3. K. Hunger, Industrial Dyes: Chemistry, Properties, Applications, WILEY-VCH Verlag GmbH


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Introduction

Manager-in-Chief:
Prof. Zahra Ranjbar
Editor-in-Chief:
Dr. Farahnaz Nourmohammadian
Assistant Editor:
Dr. Mozhgan Hosseinnezhad
ISSN:
2008-2134
ISSN (online):
2383-1790
Publisher:
Institute for Color Science and Technology (ICST)

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