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Natural Dyes Offer Sustainable Textile Colors, Study Finds Mordanting Key to Vibrant Results
A 2026 study by Nukke Sylvia, Edy Muladi, and Elfina Rahmawati from Universitas Mercu Buana demonstrates that natural dyes can produce stable, vibrant, and aesthetically rich colors on cotton fabric when combined with optimized mordanting techniques. Published in Jurnal Multidisiplin Madani (MUDIMA), the research highlights how eco-friendly dye sources—such as indigo, turmeric, and mangosteen peel—can replace synthetic dyes while still achieving high-quality textile results. The findings matter as the global textile industry faces growing pressure to reduce environmental pollution caused by chemical dyes.
A Shift Toward Sustainable Textile Production
The textile industry is one of the largest contributors to water pollution due to synthetic dye waste that is difficult to degrade. At the same time, consumer demand for environmentally responsible products continues to rise. Cotton fabric, widely used for clothing and household textiles, has become a key focus for sustainability innovation because of its natural fiber properties and high absorbency.
Natural dyes derived from plants offer a promising alternative. Materials such as indigo, secang wood, turmeric, jolawe, and mangosteen peel produce soft, distinctive color tones. However, these dyes often struggle with low color absorption and stability, making technical optimization essential for practical use in modern textile production.
How the Research Was Conducted
The Universitas Mercu Buana research team used an experimental and qualitative descriptive approach to explore how natural dyes interact with cotton fabric. The study focused on creating monochromatic color combinations—variations of a single color tone—without synthetic additives.
Key elements of the methodology include:
- Materials tested: Indigo, turmeric, secang wood, mangosteen peel, jolawe, and mahogany
- Fabric type: 100% cotton
- Mordants used: Alum, tunjung (ferrous sulfate), and vinegar
Techniques applied:
Pre-mordanting (before dyeing)
- Meta-mordanting (during dyeing)
- Post-mordanting (after dyeing)
- Variables examined: Water concentration, soaking duration (8–24 hours), and drying methods
Instead of relying on laboratory instruments, the researchers conducted detailed visual analysis to evaluate color intensity, stability, and aesthetic quality across different treatments.
Key Findings
The study identifies several critical factors that determine the success of natural dyeing on cotton fabric:
1. Water concentration controls color intensity
- Higher pigment concentration produces deeper, more vivid colors
- Diluted dye solutions result in pale and uneven tones
- Adjusting water volume enables controlled monochromatic gradients
2. Mordant type determines color character
- Tunjung (ferrous mordant): Produces darker, grayish tones by altering pigment chemistry
- Vinegar (acidic mordant): Enhances brightness and preserves original color
- Alum: Creates bright, stable colors similar to vinegar but with strong pigment bonding
3. Mordanting technique shapes final results
- Pre-mordanting: Produces stable, natural-looking colors but lower intensity
- Meta-mordanting: Generates the most vibrant and varied colors
- Post-mordanting: Deepens or intensifies color after dyeing
4. Drying method affects durability and appearance
- Direct sunlight causes fading due to UV exposure and oxidation
- Shade drying results in more stable, even, and long-lasting colors
5. Monochromatic color design is achievable naturally
- By adjusting concentration, time, and mordants, a full range of tones—from light to dark—can be created from a single dye source
Overall, the study confirms that technical control—not synthetic additives—is the key to achieving high-quality natural dye results.
Why Mordanting Matters
Mordanting plays a central role in binding natural pigments to fabric fibers and shaping the final color outcome. Without mordants, natural dyes tend to fade quickly or fail to adhere properly.
The researchers explain that each mordant interacts chemically with pigments in different ways. For example, ferrous ions in tunjung shift colors toward gray, while acidic conditions from vinegar stabilize pigments and enhance brightness. Alum forms strong coordination bonds that improve both color intensity and durability.
“Optimization of mordanting variables and consistent technical procedures can produce harmonious, aesthetically pleasing, and environmentally friendly color gradations,” the authors from Universitas Mercu Buana explain.
Real-World Impact
The findings offer practical implications for multiple sectors:
For the Textile Industry
- Natural dyes can reduce environmental pollution from chemical waste
- Optimized mordanting techniques enable scalable, high-quality production
- Monochromatic design opens new opportunities for sustainable fashion
For Designers and Artisans
- Control over water, mordants, and drying allows precise color creation
- Natural dyes can achieve modern aesthetics without synthetic inputs
- Expanded creative flexibility through tonal variations
For Environmental Policy and Sustainability
- Supports circular economy principles by using renewable, plant-based materials
- Reduces reliance on harmful industrial chemicals
- Encourages eco-friendly innovation in manufacturing
For Consumers
- Access to safer, skin-friendly textile products
- Increased transparency in sustainable production practices
Author Profile
- Nukke Sylvia – Researcher in textile design and sustainable materials, Universitas Mercu Buana
- Edy Muladi – Academic specializing in applied textile processes, Universitas Mercu Buana
- Elfina Rahmawati – Researcher in fashion and material innovation, Universitas Mercu Buana
The team focuses on sustainable textile innovation, particularly the development of natural dye systems and eco-friendly design approaches.
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