TEST FOR FASTNESS OF HAEMATITE DYE ON VARIOUS FABRICS
Abstract
The fastness properties of haematite dyes are critical in determining the durability and quality
of dyed textiles under various conditions. This study evaluated the colour fastness of cotton,
silk, and polyester fabrics dyed with haematite. Tests for wash fastness, light fastness, rubbing
fastness, and perspiration fastness were conducted following standardized methods ISO
(International Organization for Standardization) and AATCC (American Association of
Textile Chemists and Colorists). Experimental results indicated that polyester exhibited the
highest wash and rubbing fastness due to the hydrophobic nature of disperse dyes, which
strongly bind to synthetic fibers. Silk demonstrated moderate fastness, with excellent color
retention in acidic perspiration but slight fading under light exposure. Cotton showed good
wash fastness when treated with reactive dyes but displayed lower light fastness compared to
synthetic fibers. Overall, the fastness properties varied significantly based on fiber type with
synthetic fibers outperforming natural fibers in most tests. These findings highlight the
importance of selecting appropriate dyes and treatment methods to enhance the longevity of
dyed textiles in practical applications.
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