Abstract
The alkaline-etching of polyester fiber has improved the feeling of the cloth and of the dyed goods. In the process, the control of dispersion state of inorganic micro particle in polyester became extremely important. After a few types of colloidal silica's were added to ethylene glycol, the polymerization were carried out under several conditions. It was concluded that, for achieving better dispersion of silica particles in polyester matrix, colloidal silica which was stable in basic circumstance and the lower esterification temperature were preferable. The particle dispersion was observed by the transmission electron microscopy. After measurement of distances between the particle centers, the dispersion state was analyzed using Rayleigh's statistics which allow us to evaluate the dispersion state whether the particles aggregated or the particles dispersed uniformly.
