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Application of Zero-Crossing Technique in Derivatives of the Kubelka—Munk Function to the Quantitative Analysis of Bicomponent Mixtures of Dyes

Textile Engineering Department, Guilan University, Rasht, Iran, a_shams{at}guilan.ac.ir

E. Ekrami

Textile Engineering Department, Guilan University, Rasht, Iran

In this study a new derivative method is introduced for the computation of color recipe in bicomponent mixtures of textile dyes. The reflectance spectra of the samples dyed with different binary mixtures of dyes were recorded between 400 and 700 nm. The derivative amplitudes of the Kubelka—Munk function at appropriate zero-crossing wavelengths were selected for the determination of dyes in the mixtures. The obtained results indicate that the developed zero-crossing-point derivative method is more accurate than the normal Kubelka—Munk method. The proposed derivative method is simple, accurate, and suitable for quantitative analysis of samples dyed with binary mixed shades.

Key Words: determination • dye • textile • Kubelka— Munk • zero-crossing • derivative

Textile Research Journal, Vol. 78, No. 12, 1139-1147 (2008)
DOI: 10.1177/0040517508091315


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