Abstract
Yarns and fabrics can be improved through structural modifications. Using an organic solvent is a novel and popular approach for a structural modification in the field of textiles. In the present work, Siro-spun® and TFO (Two for one Twisters) polyester yarns were modified with a solvent-acid mixture of aceton and trichloroacetic acid : methylene chloride (TCAMC). Both types of yarn samples were treated in a relaxed state with various concentrations of the solvent’s mixture at room temperature. The influence of the treatment with respect to linear density and TCAMC concentration on mechanical properties was investigated. Modified yarns exhibited higher breaking elongation, improved abrasion resistance and lower tenacity. It was also found that the methods of yarn manufacturing contribute significantly to the tensile behaviour of modified yarns. The improvement in elongation was higher in the treated TFO yarn. The abrasion resistance index was found to be lower in the case of siro polyester yarns. Furthermore, significant mass loss in yarn was observed after the treatment of TCAMC.
Highlights
Properties of spun yarns are mainly affected by fibre properties, process parameters and the spinning system
This paper embodies the effect of the concentration level of trichloroacetic acid methylene chloride on weight, tensile and abrasion properties of TFO and siro yarn
A 7.14–34.18% strength drop was found for TFO yarn and 7.27–31.66% for siro yarns
Summary
Properties of spun yarns are mainly affected by fibre properties, process parameters and the spinning system. Siro-spinning with 2-ply multifold yarn is another most widely used new spinning method invented by CSIRO (Division of Textile Industry Laboratories) in Australia and IWS. When polyester fibres are pretreated with highly interacting solvents under suitable conditions, the internal structure, especially the amorphous region, changes producing more voids, cracks etc., which facilitate the entry of dye molecules at lower temperatures. Such modified polyester fibres are developed to replace the conventional ones in a wide range of applications [5,6]. The effect of the treatment on tensile strength and breaking extension was studied for different linear density yarns
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