Physical characterization of iridescent textiles

In recent years, iridescent materials have come to play an increasingly important role in the world of the industries like cosmetics, textile, automotive, etc. They belong to the goniochromic materials, that they have a variable and changing colour appearance, according to the conditions of observation or lighting. The extension of these materials and the complexity of their use and their reproduction in textile reveal new research orientations in this field. These consist in studying the origin of these colours, their optical properties, their various perceptible effects on the textiles. The aim of our work is to develop a physical protocol of characterization which identifies the iridescence textiles and reveals their particularities in regard to the ordinary textiles without appealing to the human evaluation. An instrumental analysis has allowed defining the physicals characteristic of the iridescent textiles.