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Feasibility of Dyeing Jute and Jutecotton Union Fabric Using Novacron Dyes

Md. Asib Iqbal
Pilot Plant and Processing Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207

Nazmina Chowdhury
Pilot Plant and Processing Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207

Mohammad Maniruzzaman
Mechanical Processing Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207

Mahmuda khatun
Jute and Textile Product Development Centre, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207.

Jannatul Bake Molla
Jute and Textile Product Development Centre, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207.

Abstract/ Executive Summary:

Abstract: Reactive dye is widely used in textile field. Novacron dyes is one of them. Dyeing method has the advantage of running continuous production. With small amount of dye consumption with simple application technique and less waste water contamination, we can save energy, time, water and labour employment and ultimately increase the production rate. The affinity of dyes of small molecular weight is low and diffusion rate inside cellulosic fibres is high. Novacron dyes have higher molecular size, so in dyeing it becomes effective in jute and jute-cotton union fabric. All cellulosic fibres like jute and jute-cotton union can be dyed by continuous method with very good fastness properties.

Keywords: Color fastness; Unfixed dye; Color loss; Fixation; Bleached fabric.

Location: Pilot Plant and Processing Division, Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207.

Start Date:

End Date:

Program Area: Resource Development and Management

Commodity: Jute, Fabric

Objectives:

Different color is widely used to dye textiles specially fabrics. A lot of water is needed for dyeing process for each number of fabrics/yarns. We can produce fabric by rearranging colored yarn in weaving machine as well as colored stich. With the help of resist dyeing methods, tying off, wax design on cloth and different printing process we can produce different pattern. At present woodblock printing is widely used in India which was exist in the past. White or pale textile can be produced by bleaching.

Methodology:

Dyeing with Reactive dyes by semi continuous method: The bleached fabric was dyed with Reactive dyes using a suitable recipe, applying technique.

Recipe

1. Lissapol N (wetting agent) -1 g/l

2. Novacron Blue FNR -2 g/l

3. Salt -50 g/l

4. Soda - -12 g/l

The fabrics were padded with the above formulation giving pick up 90%, dried and cured at different temperatures like 1100C, 1200C, 1300C, 140⁰C, 150⁰C, 160⁰C for 1 minute in order to find out the optimum condition (temperature) for dye fixation. The other bleached fabrics were dyed with four kinds of Reactive dyes as mentioned above and cured at 150⁰C for 1 minute which is the optimum condition for dye fixation.

Testing: The dyed fabrics were tested for determination of washing, rubbing, and light fastness applying British standard method. Breaking strength of the fabrics was also measured. Repeated extraction of unfixed dye determines dye fixation value. Wave length of maximum absorbance measures optical density. A coordination complex of dye is used in dyeing with the help of mordant or dye and is attached with fabric or tissue. It is used for dyeing fabrics and intensify stains in cell or tissue preparations. In small batch dryer mordants is still used and widely displaced in industry.

Pretreatment of jute fabrics: In order to remove impurities like natural waxes, oils, peptic substances and natural coloring matters present in jute fibre, fabric was first scoured with 3% soda ash, 1.5% caustic soda and 1% wetting agent (percentage is based on the material) at 80-90^oC) for 1 1 2 hour. And then bleached with 12 gm/l hydrogen peroxide (35%), 7 gm/l sodium silicate and 1.5 gm/l soda ash at 80-90^oC for 1 hour giving liquor ratio of 1:20. The pH was adjusted to 10-10.5 initially. The fabric was then has washed with hot water as well as also cold water and dried. The fabric was cut into pieces for different sets of experiments.

The distance between the top and the bottom aprons should be adapted to the fiber mass to be drafted. Thus, the coarser the roving or the yarn, the wider the mouth opening should be. You can determine the most favourable setting by conducting preliminary trials. The dyed fabrics followed by curing at different temperatures for optimization were evaluated by determination of dye fixation (%), color fastness properties and tensile strength.Wash fastness is the ability of fabrics to retain the dyes used to color them. In general, deeper and darker colors usually lead to an increase in the light fastness results of fabrics.

Source of Information: DAFFODIL INTERNATIONAL UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY, VOLUME 17, ISSUE 1, JANUARY 2022 ISSN 1818-5878 (Print) 2408-8498 (Online)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Dye consumption in case of jute-cotton union fabric is more than jute fabric. The optimum condition was found out by determination of dye fixation (%), fastness properties as well as of breaking strength. It was observed that the dye fixation attained 90% (maximum) and washing, rubbing and light fastness attained 5, 5 and 6-7 respectively when the dyed fabrics were cured at 160^oC for 1 minute. Most of the cases the results are quite satisfactory when curing at 160 ^oC for 1 minute. There was remarkable difference in the fastness properties of Reactive dye. All results are good in case of jute-cotton union fabric than 100% jute fabric by using Novacron dye. Jute-coton dyeing method has the advantage of running continuous production with simple application technique, less waste water contamination, saving energy, time, water and labour employment and ultimately increase the production rate. So, the method can be considered economically viable for commercial application. Hence, jute and jute-cotton union fabric can be dyed by continuous method with very good fastness properties.

Knowledge Management: Journal