ABSTRACT

Surface extractable noncellulosic materials and metal contents on a series of single season domestically grown cottons that had been previously processed by ring and rotor yarn production systems were determined. Resultant concentrations were correlated with standard fiber HVI physical properties, and produced yarn properties and spin performance. Very positive relationships were found between increasing total surface extractables and fiber/yarn strength, and decreases in short fiber content/evenness thick and thin places. Concentrations of the metals potassium and magnesium were found to be highly related to fiber and yarn color. Increasing levels of calcium tended to promote increases in measured short fiber contents and inconsistencies in produced yarns.