Effects of stabilising overfeed on the properties of draw textured polyester yarns

Abstract

This article deals with the effects of stabilising overfeed (SOF) on the physical properties and structure of draw-texturised polyester yarn. Partially oriented (POY) polyester filament yarn is taken as the starting material for the experiment which is undergone texturing treatment with the various levels of SOF percentage (4% to 14%) keeping other texturing parameters constant. Various characteristics and properties of the texturised yarn samples are measured and analysed to find out the effect of the SOF% on the physical properties and structural changes of the resultant yarns. Bulk and physical structure of all textured yarns are measured by taking optical microscopy images. Change in tensile properties are evaluated by using a universal tensile tester. Change in thermal behaviour of the texturized yarns is evaluated by using differential scanning calorimeter. Thermal degradation and stability of the yarns are measured by using a thermo-gravimetric analyser. Change in the crystallinity of the yarn samples is measured by a wide-angle X-ray diffraction instrument.

Keywords:

• Texturing
• polyester
• stabilising overfeed
• yarn bulk
• thermal stability
• draw-texturing
• crystallinity