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Eco-friendly Pretreatment of Cotton Fabric with Banana Ash and Dyeing Using Banana Sap

Avik Kumar Dhar (M. Sc. in Textile Engineering)
University of South Asia, Bangladesh

Maitry Bhattacharjee (B. Sc. in Textile Engineering)
Shyamoli Textile Engineering College, University of Dhaka, Bangladesh

Most. Mahfuza Rima (B. Sc. in Textile Engineering)
Textile Engineering College, Zorargonj, Chittagong, Bangladesh

Muhammad Abdur Rashid (M. Sc. in Textile Engineering)
Dhaka University of Engineering & Technology (DUET), Bangladesh

Abstract/ Executive Summary:

The aim of this study is to evaluate environment supportive pretreatment and dyeing process. In this project, pretreatment of cotton fabric was done by using banana ash. Also, dyeing was carried out with banana sap along with different mordants that are eco-friendly and cost saving. Here, all the experiments were carried out on woven (plain) fabric of 141 GSM. Firstly, cotton fabric was scoured by means of banana root’s ash (pH-10.2). It was then dyed with banana sap (pH-5.4). This banana ash scoured cotton fabric was compared with conventionally scoured cotton fabric through weight loss % and absorbency test. In addition, fastness properties and performance of dyeing were measured through CIE L*C*h, K/S value, and different color fastness tests. Banana ash scoured and dyed with banana sap, using mordant (horitoky), provided the best dyeing performance and color fastness to wash, rubbing, and perspiration than the others.

Keywords: Eco-friendly, Banana root’s Ash, Banana Sap, Scouring, Color fastness

Location: University of South Asia, Bangladesh

Start Date:

End Date:

Program Area: Resource Development and Management

Commodity: Cotton, Fabric, Banana

Objectives:

In this study, pretreatment of cotton fabric was attempted to be carried out with banana root’s ash and dyeing with banana sap. Therefore, this was extracted from banana plant bark to overcome the harmful effect of synthetic chemicals and also the complexity of enzyme and other applications. Optimum quality needs to be checked also.

Methodology:

Method Pretreatment Recipe Wetting agent - 1g/l Sequestering Agent - 2g/l Banana Ash - 60g/l Time - 45min M:L - 1:30

Dyeing Recipe Banana Sap - 40ml Fabric Weight - 5g Sequestering Agent - 2g/l Wetting Agent - 1g/l Temperature - 950 C Time - 40min M:L - 1:30

Banana sap is collected from the banana tree through a manual process. Then the recipe was prepared and the fabric was dyed without mordant and with mordant. Hence, mordant Potash Alum and Horitoky were used. Overall, 4 different samples were found as follows: Sample A was conventionally scoured and dyed with banana sap without mordant. Sample B, Banana ash scoured and dyed with banana sap without mordant. Sample C, Banana ash scoured and dyed with banana sap using mordant (alum). Finally, Sample D, Banana ash scoured and dyed with banana sap using mordant (horitoky). Meta-mordanting (metal chrome) was carried out where the mordant is added in the dye bath itself.

Source of Information: European Scientific Journal September 2017 edition Vol.13, No.27 ISSN: 1857 – 7881 (Print) e - ISSN 1857- 7431

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

In favour of the environment, this project ensures natural scouring and dyeing processes which were done by banana ash and banana sap. The experimental data shows the suitability of natural process over the existing process. Environment pollution, effluent rate, and health hazard can be extirpated in performing the processes using the easiest way and resources. In this project, it was shown that scouring of cotton fabric with banana ash result in 8% weight loss. Whereas in case of conventional scouring (NaOH), weight loss was calculated as 10%. In addition, dyeing of cotton fabric with banana sap, especially with the presence of horitoky, showed better K/S value, CIE L*C*h value, and fastness properties than the other samples. Further researches can be carried out on banana sap keeping in mind its ecofriendly nature.

Knowledge Management: Journal