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Waterless supercritical CO2 dyeing of polypropylene fibers: Structure–color relationship as affected by fiber fineness and dye concentration
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DOI：10.1016/j.jtice.2026.106924.png)
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Abstract
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Conventional textile dyeing involves high water consumption and pollution. PP fibers are difficult to dye by aqueous methods because of their nonpolar molecular structure and high crystallinity. This study investigates supercritical carbon dioxide (scCO₂) dyeing as a sustainable waterless coloration approach and examines how fiber fineness influences the coloration behavior of commercially available PP fibers.
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