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Comprehensive analysis and modeling of dye diffusion within fibers in supercritical CO2 for sustainable textile dyeing
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DOI：10.1016/j.supflu.2025.106786.png)
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Abstract
En 中文
• Temperature, pressure, dye, and fiber effects on diffusion in scCO₂ were analyzed. • A new diffusion model was developed using Arrhenius and free volume theories. • Dye-specific correction factors were introduced to improve model generality. • PET–disperse dye system shows good model fit with < 10 % error in all cases. • Study offers theoretical basis for optimizing scCO2 dyeing across fiber–dye systems.
Keywords:
Supercritical CO2 dyeing
Dye diffusion coefficient
Arrhenius equation
Free volume theory
Multi-variable diffusion coefficient model
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4.4
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5.6K
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