抄録
The cotton fibers, threads and fabrics which were repeatedly colored with clay minerals by the process of immersing, drying, and rinsing were observed with an optical microscope and a SEM. The particle size distribution of the clay suspension, absorption spectra of the filtration of the suspension and K/S values of the colored fabrics were measured by laser diffraction scattering method, uv-vis spectrophotometry and diffuse-reflectivity at 400 nm, respectively. As a result, it was revealed that the smaller the diameters of the clay particles were, and the more repeating the process of immersing, drying, and rinsing was, the more deeper coloration were obtained. The clay particles of 0.3～3μm were observed on fiber surface after coloring, though the average diameters of the clay used for coloration were approximately 10～14μm.
