Direct Color Change of Dyed Polyester Using Supercritical CO₂ (IMAGE)

University of Fukui

Direct Color Change of Dyed Polyester Using Supercritical CO₂

Caption

In this study, researchers directly changed the color of dyed polyester through supercritical CO₂ treatment. During treatment, dyes migrate and redistribute between differently colored polyester fibers, creating a new uniform color without first removing the original dyes.

Credit

Professor Kazumasa Hirogaki from University of Fukui, Japan

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