Thesis Details

Thesis Title: A model to predict dye uptake of polyester staple using near-infrared reflectance analysis
Thesis Author: James R. Hassick
Abstract: Staple polyester production is a complex process and tight control of the process variables is required. Small variations in processing temperatures, pressures, polymerization rates, or drawing roll speeds can cause significant changes in the molecular structure of the fiber. These changes in fiber structure can lead to differences in many areas of textile production during processing in textile plants. This work concentrated on determining how these structureal variations influence the dye uptake of polyester staple and on using Near-Infrared Reflectance Analysis (NIRA) to predict the effect of those variations on the dye uptake in a production environment. To better understand the effects of polyester structure on dye uptake and on NIRA absorption values, a need existed to develop a method to relate the NIRA readings to the structural characteristics of the polyester staple which influence the dye uptake.