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ABSTRACT
The use of non-toxic and eco-friendly natural dyes on textiles has received much attention due to the increased environmental awareness to avoid some hazardous synthetic dyes. In the present study, an eco-friendly approach was developed to impart colour and antibacterial properties to cotton fabrics dyed with Justicia schimperiana leaf extract as a non-toxic natural colourant. The solvent method of extraction and exhaust dyeing method was used for this study. Copper sulphate, ferrous sulphate, and alum were applied in a simultaneous -mordanting process as a mordanting agent. The effects of shade percentage, dyeing temperature, and dyeing time on the obtained colour strength of the fabrics were investigated. Optimisation of dyeing conditions was carried out using Box Behnken design of expert software. An optimum level of 3. 28 colour strength (K/S) was observed in the sample treated with a shade percentage of 50 (% o.w.f), 72 °C dyeing temperature, and 45 minutes of dyeing time. Antibacterial properties of treated fabrics were evaluated against common pathogenic bacteria, Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). The results indicated the treated fabrics possessed desirable antibacterial properties. The washing and rubbing fastness of the dyed fabrics were also reported.
Acknowledgments
The authors express their sincere appreciation for the technical assistance provided by the college of engineering and technology, at Wolkite University in Wolkite, Ethiopia.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Data availability statement
The datasets used and/or analysed during the current study are available from all authors upon reasonable request.
Authorship contribution statement
Worku Tegegne: Writing- original draft, Adane Haile:Supervision, Methodology, yerdawu zeleke, writing and editing, Yohannes Temesgen: Lab. Work, Editing, Siltanu Biyable: - review & editing, Haymanot Bantie: Lab. Work, Review
Additional information
Notes on contributors
Worku Tegegne
Worku Tegegne is a senior lecturer and researcher at wolkite university, He obtained his Bsc and Msc degree in 2019 and 2022 respectively from Bahir Dar University. His work has been Published in several prestigious sciencetific journals and he has recieved numerous awards for his contribution in the field.
Adane Haile
Adane Haile Associate is a distingushed researcher who has made significant contribution in the field, He has held a senior researcher position at Bahir Dar University. With a wealth of knowledge and experience, Associate Professor Adane Haile has authored numerous papers that have been published in reputable journals. Associate Professor Adane Haile’s commitment to advancing knowledge and his dedication to mentoring students have made him an invaluable asset to the academic community.
Yirdawu Zeleke
Yirdawu zeleke is a senior researcher at wolkite univeristy and now he is a PHD candidate at ITMO university, Russia. He holds a chair position in the Department of textile engineering. Yerdawu’s work has been published in leading journals in his feild and he has presented his findings at international conferences. He is passoniate about teaching and mentoring students in undergraduate and postgraduate level.
Yohannes Temesgen
Yohannes Temesgen was a researcher at wolkite univeristy. He obtained his Bsc degree from wolkite university in 2023. He is passionate about doing researches and community service activities.
Haymanot Bantie
Haymanot Bantie was a researcher at wolkite university in the depertment of textile engineering, he obtained his Bsc. degree from wolkite Univerisity in 2023.
Siltanu Biyable
Siltanu Biyable was a researcher at wolkite univeristy in textile engineering department. He obtained his Bsc degree from wolkite Univeristy in 2023.