The purpose of this study was to investigate the effect of the permenent pleats finish on the cystine contents and the physical properties of wool fabrics. Monoethanolamine Sulfite (MEAS) was used as a reducing agent. Cystine contents of the fabrics were determined after the fabric was treated with various MEAS concentrations and steamset time. The cystine contents were increase as the MEAS concentrations were increased. The cystine contents were also increased with steamset time. As the settability showed close relationship with the cystine contents, breakdown and rebuilding of the cystine linkage was thought to play an important role for the settability. Physical properties such as shrink resistance, crease recovery angle and tensile strength were increased as the MEAS concentration was increased. As the stramset time was increased, shrink resistance and crease recovery angle were in creased.
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