Determining the Absorption Properties of Split-Type Microfiber Fabrics by Measuring the Change in Color Depth

摘要

When a textile material absorbs a liquid, its color appeal's deeper than that when it is dry because of the difference in reflectance. The difference in the diffuse reflection between the air and the liquid leads to a difference in color depth between the dry and wet conditions. Using this observation, it is possible to measure absorption weight without a balance. In this research, a spectrophotometer measures these reflection characteristics to ascertain the weight of an absorbed liquid. The textile is a wiping cloth composed of split-type nylon/polyester conjugated multifilaments. The reflectance of the samples is scanned over wavelengths (λ) in the range 400 ≤ λ ≤ 700 nm in the spectrophotometer at intervals of λ = 20 nm. A regression analysis of the results shows a significant (P < 0.05) linear relationship between the absorption weight and the reflective characteristics (K/S value, lightness, and color difference). The correlation of the regression analysis of samples with up to 60% maximum absorption weight is much higher than those with up to 100% maximum absorption weight, and the coefficients of determination in most cases have very high values. Determining the color difference is more useful than the KIS or lightness values because it shows similar absolute values as well as the slopes.