Differential Distribution of Cross-Linking Agents in Cotton Fabrics

Abstract

A new mechanism is proposed to impart improved wear life in 100% cotton fabrics by treating with cross-linking agents so as to effect a differential distribution of the cross- linking agent in the fabric, yarn. and fiber. The theoretical basis for this is considered and practical methods to achieve the differential distribution effect are reported. Results obtained from the laboratory application study cover both spread coatings with a knife-coater and spraying techniques. In addition to the mechanical methods of distribution cotitrol, several chemical approaches, such as resist methods and poisoning and also the achievement of effectiveness by heat migration with conventional saturation methods, are reported. Microscope studies. coupled with dye identification techniques, have established the existence of this new resin distribution system in several fabric structures and confirm that the desired differential effects have been obtained.

Physical property measurements show that crease resistance, crease retention, and wash/wear appearance comparable to conventional saturation methods with deferred cure cross-linking systems are obtained. Wear life, as measured by laboratory test methods, has been found to be markedly improved.