Textile and Apparel Science

Colorfastness of Bicolor Sorghum Leaf Sheath on Hemp Fabric

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Abstract

This study evaluated colorfastness and staining of sorghum leaf sheath dye on hemp fabric. Hemp fabric samples were pretreated with three different solutions to improve colorfastness of sorghum dye on hemp fabric. Dye was extracted in a heated aqueous solution. Hemp samples were dyed in heated dye solutions, rinsed and air dried. Specimens were hand laundered using a neutral detergent according to the American Association of Textile Chemist and Colorists-6 (AATCC) for hand laundering. Colorfastness was evaluated for color change and staining according to AATCC gray scale. Results of color difference in colorimetric values of the control and laundered specimens were rated 1 indicating poor colorfastness across all pretreatments. Plant fibers were slightly stained, and noticeable on nylon and polyamide and silk. Hemp fabric dyed with bicolor leaf sheath was not colorfast to hand laundering, even with tannin pretreatments. Evaluation of other fibers and lightfastness are recommended.

Keywords: natural dye, hemp, sorghum, tannin

How to Cite:

Bamidele, T. & Haar, S. J., (2022) “Colorfastness of Bicolor Sorghum Leaf Sheath on Hemp Fabric”, International Textile and Apparel Association Annual Conference Proceedings 78(1). doi: https://doi.org/10.31274/itaa.13787