Program of Physics, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, 65000, Thailand.
Sci Rep. 2024 Oct 26;14(1):25509. doi: 10.1038/s41598-024-74944-x.
The use of natural bioresources in textile dyeing has attracted significant research interest due to their environmentally friendly and low-toxic nature. This study investigated the utilization of waste oyster shell (WOS) as a bio-mordant combined with sappan wood extract to dye silk fabrics using pre-, meta-, and post-mordanting method. The crystal structure of CaCO derived from WOS and their impact on color properties, color strength and color fastness were analyzed. The dyed fabrics displayed a range of shades from light pink to deep red and brown. FTIR analysis confirmed chemical interactions among dye, silk, and WOS mordants. Notably, silk treated with WOS at 800 °C as a pre-mordant showed color strength approximately 2.6 times higher than that of un-mordanted samples. Additionally, bio-mordanted samples exhibited improved color fastness compared to untreated ones (rating 2), with pre-mordanting offering the highest resistance to washing (rating 4-5). These findings shed light on the potential of waste oyster shell as an effective, sustainable alternative to conventional metal mordants in textile dyeing. This study not only support the utilization of waste but also enhances environmental and resource efficiency of the dyeing process.
利用天然生物资源进行纺织品染色因其环保和低毒性而引起了广泛的研究兴趣。本研究探讨了利用废弃牡蛎壳（WOS）作为生物媒染剂，结合苏木提取物，采用预媒染、媒染和后媒染法对丝绸织物进行染色。分析了 WOS 衍生的 CaCO3 的晶体结构及其对颜色特性、色强度和色牢度的影响。染色后的织物呈现出从浅粉色到深红色和棕色的一系列色调。FTIR 分析证实了染料、丝绸和 WOS 媒染剂之间的化学相互作用。值得注意的是，用 800°C 的 WOS 进行预媒染处理的丝绸的色强度比未媒染的样品高约 2.6 倍。此外，与未处理的样品相比，生物媒染的样品具有更好的色牢度（评级为 2），其中预媒染的样品具有最高的耐洗性（评级为 4-5）。这些发现揭示了废弃牡蛎壳作为传统金属媒染剂在纺织品染色中的有效、可持续替代品的潜力。本研究不仅支持了废物的利用，还提高了染色过程的环境和资源效率。
