Abstract
The effect of two softeners (Sapamine ® OC and Ultratex ® ASG) on physical properties of BTCA finished cotton fabrichas been studied. Bleached cotton fabrics are treated with 1, 2, 3, 4-butane tetracarboxylic acid (BTCA) followed byfinishing with a cationic and a silicone softener by conventional pad-dry-cure method. Properties, such as crease recoveryangle, absorbency, whiteness index, tensile strength, moisture regain, surface morphology and crystallinity of the finishedfabrics, have been evaluated. The crease recovery angle of the finished fabrics increases from 154° to 257° after treatmentwith BTCA and further increases to 266° after BTCA+silicone softener based finishing. The absorbency of cationic softenerfinished fabric is found to be higher than that of silicone softener finished fabrics. Tensile strength reduces after BTCAfinishing by more than 50%, and about 17% softeners is recovered. Scanning electron microscope images show smoothridges and surface characteristics of cotton fibres in BTCA treated samples as well as deposition of softener on the fibresurface in cationic and silicone softener finished fabrics.
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