Extraction and characterization of natural dye from leaves of Lannea coromandelica and application on cotton fabric
Abstract
Purpose
The purpose of this study is to extract and characterize a novel natural dye from the leaves of Lannea coromandelica and the extraction with finding ways of dyeing cotton fabric using three mordants.
Design/methodology/approach
The colouring agents were extracted from the leaves of Lannea coromandelica using an aqueous extraction method. The extract was characterized using analysis methods of pH, gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared (FTIR), ultraviolet-visible (UV-vis) and cyclic voltammetry measurement. The extract was applied to cotton fabric samples using a non-mordant and three mordants under the two mordanting methods. The dyeing performance of the extracted colouring agent was evaluated using colour fastness properties, colour strength (K/S) and colour space (CIE Lab).
Findings
The aqueous dye extract showed reddish-brown colour, and its pH was 5.94. The GC-MS analysis revealed that the dye extract from the leaves of Lannea coromandelica contained active chemical compounds. The UV-vis and FTIR analyses found that groups influenced the reddish-brown colour of the dye extraction. The cyclic voltammetry measurements discovered the electrochemical properties of the dye extraction. The mordanted fabric samples showed better colour fastness properties than the non-mordanted fabric sample. The K/S and CIE Lab results indicate that the cotton fabric samples dyed with mordants showed more significant dye affinities than non-mordanted fabric samples.
Originality/value
Researchers have never discovered that the Lannea coromandelica leaf extract is a natural dye for cotton fabric dyeing. The findings of this study showed that natural dyes extracted from Lannea coromandelica leaf could be an efficient colouring agent for use in cotton fabric.
Keywords
Acknowledgements
All authors wish to extend their sincere gratitude to Mr. M.T.M.R. Jayaweera, Mr. M.A.P.C. Gunawardhana and Mr. R.R.P. Perera of the Department of Materials Science of University Moratuwa and Mr. C.P. Malalanayake, Mrs. D.M.D.S. Dissanayake and Mr. K.D.T.A. Kumara of the Department of Textile and Apparel Engineering of the University of Moratuwa. Additionally, all authors thank the University of Moratuwa for providing financial support through the Research Grant No. SRC/LT/2021/13 for the publication of this full paper.
Conflict of interest: The authors declare that there are no conflicts of interest.
Compliance with ethical standards: This paper does not contain any studies involving human or animal subjects.
Citation
Samarawickrama, K.G.R., Wijayapala, U.G.S. and Fernando, C.A.N. (2024), "Extraction and characterization of natural dye from leaves of
Publisher
:Emerald Publishing Limited
Copyright © 2024, Emerald Publishing Limited