Abstract
Two Fibermax varieties of cotton grown in a single season and common to three domestic areas were blended into lots, evaluated for physical properties, and subsequently spun on ring, open-end, and Vortex systems. Samplings of carding sliver, finish drawing, and yarns selected at different processing stages were tested for fiber noncellulosic content. Variations in fiber micronaire, which were highly related to growing location, influenced initial concentrations of total alcohol surface nonfibrous and wax extractables. In processing, no changes were seen in the fiber plant sugar or surface wax content. Alcohol extractables decreased in the opening and carding and yarn spinning stages Concentrations of the residual light metals potassium, calcium, magnesium, and sodium were reduced on the fiber primarily in the opening and carding stage of yarn production The magnitude of reduction in alcohol surface extractables and light metal content during processing was found to be highly related to fiber micronaire.
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