Beer's law of light absorption and the Kubelka-Munk analysis are applied to absorbing-scattering fabric. A relation between the Kubelka-Munk function F(R) and the absorbance of dyed fibers is proposed. The relation is used to predict the absorbance of a colorant from the reflectance of a substrate dyed with it. Samples of polyester fibers dyed with different colorants are used. The predicted absorbances of these samples agree fairly well with those measured directly on the spectrophotometer.
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Shérif et al. (1997) studied this question.
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