Dyeability of Cotton Fabric with Extract from Bougainvillea Glabra

Abstract:

In this study, cotton fabrics were dyed with extracts from Bougainvillea glabra (BG) flowers which are widely grown around the world, especially in Southeast Asia. The obtained results indicated the dyeability of dyed fabrics were influenced by BG concentration, exhaustion temperature, dyeing time, types and content of mordants, and the amount of alkali in the washing solution. By comparing color difference (DE) between standard sample and dyed sample, it is confirmed that dyeing efficiency was significantly improved with increased BG concentration and exhaustion temperature. All cotton fabrics should be dyed with BG extracts at reasonable temperature, ideally below 45°C. While the presence of metal mordants such as FeSO₄.7H₂O, CuSO₄.5H₂O and KAl(SO₄)₂.12H₂O increased the color fastness of the dyed fabric, they also caused seriously color change as compared to fabric dyed without mordants. To ensure color fastness during washing, dyed samples with BG extracts should be laundered with low alkalinity solution.

• Periodical: Materials Science Forum (Volume 1138)
• Pages: 63-69
• DOI: https://doi.org/10.4028/p-n6OtgS
• Online since: December 2024
• Authors: Tuan Anh Nguyen*, Bao Tram Dang Ngoc, Kim Ngoc Tran
• Keywords: Bougainvillae Glabra (BG), Color Difference (ΔE), Color Fastness, Dyeability, Metal Mordant

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