Adhi Kusumastuti, Mohd Usman Mohd Junaidi, Ni'Mah Safira, Atika Atika, Samsudin Anis, Zaenal Abidin
This study explored the application of environmentally friendly ecoprinting technique on lantung bark (Ficus variegata). Three types of leaves as the motif materials, i.e. teak leaves (Tectona grandis), castor bean leaves (Ricinus communis), and red jatropha leaves (Jatropha gossypiifolia) were utilized. Whereas mordants of alum and ferrous sulphate were used as the fixation agents. In this work, ecoprint of pounding technique was applied to produce unique and durable leaf motifs. The ecoprint quality was characterised by the colour fastness to sunlight, tensile strength and elongation, as well as functional groups of ecoprinted lantung bark. The result showed that teak leaves provided excellent colour fastness to sunlight for both types of fixation agents. Furthermore, for all leaves used, ferrous sulphate appeared to provide better colour fastness to sunlight compared to alum. The results also showed that red jatropha leaves with ferrous sulphate mordant produced the highest tensile strengths and elongation of around 179 MPa and 9.96%, respectively. This shows that the selection of fixation agents dan leaf type greatly affects the quality of ecoprinted lantung bark. The FTIR analysis indicated that ferrous sulphate achieved superior fixation with tannin-rich teak leaves, producing stable and intense colours due to strong Fe-O, C=O, and C=C bonding. In contrast, alum was more effective for hydroxyl interactions, resulting in stable yet lighter colours. These findings highlighted the potential use of natural materials and traditional techniques to produce eco-friendly textile products with acceptable durability and aesthetic qualities. The study contributed to the broader understanding of sustainable practices in the textile industry, promoting the application of natural dyes and low-impact processing methods. © Published under licence by IOP Publishing Ltd.
Faculty of Engineering, Universitas Negeri Semarang, Semarang, 50229, Indonesia; Department of Chemical Engineering, Universiti Malaya, Kuala Lumpur, 50603, Malaysia; Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Semarang, 50229, Indonesia
