Photochromic Coloration of Wool Fabric

摘要

A method has been developed for producing photochromic wool fabric by applying a layer of hybrid silica containing a photochromic dye onto wool fibres.A number of different hybrid silicas were prepared by the sol-gel technique involving co-hydrolysis and co-condensation of alkyltrialkoxysilanes together with 3-glycidoxypropyltrimethoxysilane.With the dye Photorome II,it was possible to obtain a photochromic coating which showed fast optical response.The coating had only a slight effect on the fabric handle.The durability of the coating appeared to be acceptable,at least for fashion wear.