Abstract
PLA-knitted fabric was scoured in the presence of sodium carbonate and a non-ionic detergent through an exhaust technique. The scoured fabric was washed in the presence of three tailor-made formulations. Formulation I comprised of non-ionic detergent, formulation II comprised of detergent, sodium perborate and tetra-acetyl ethylene diamine (TAED) while formulation III consisted of detergent, sodium perborate, TAED and four enzymes in various proportions. The enzymes were amylases, proteases, lipases and cellulases. PLA fabric was laundered up to 50 cycles and then evaluated in terms of mechanical properties and surface morphology. The mechanical testing of fabric at low stresses was carried out on Kawabata evaluation system for Fabrics (KES-F) while the yarns were tested on an Instron testing machine. Scanning electron microscopy (SEM) was employed to investigate the surface morphology of PLA fibres.
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