AMINOLYSIS OF POLY (ETHYLENE TEREPHTHALATE) FIBERS TO IMPART THE HYDROPHILICITY

Abstract

Polyester fabrics were aminolyzed with hydrazine hydrate. It was confirmed that the hydrazine reacted with polyesters from the dyeing test using an acid dye. The moisture regain of aminolyzed fibers increased with increasing the crystallinity of fibers. It was suggested that the aminolysis-reaction mainly took place in the intermediate region surrounding the crystallites, and in the disordered portion of crystal. This leads to increase the accessibility of moisture to the surfaces of crystallites; bringing about the increase of moisture regain.