Investigation on the Effect of Blend Ratio and Loop Length on Physical and Dimensional Properties of Single Jersey Fabrics Made From Recycled Polyester and Virgin Cotton Blend

This study examines the impact of blend ratio and loop length on the dimensional and physical properties of single jersey fabrics made from recycled polyester and virgin cotton blends. Fabrics were produced using five different blend ratios (0:100, 33:67, 50:50, 67:33, and 100:0) and three loop lengths (2.7, 2.9, and 3.1 mm). Results showed that increased recycled polyester content improved tenacity, with the highest observed in 100% recycled polyester (13.6 cN/tex). Higher cotton content increased breaking elongation, with maximum elongation (14.1%) in 100% cotton. The 100% recycled polyester yarn exhibited the lowest unevenness and defects, while 100% cotton had the lowest hairiness. Recycled polyester blends increased course, wale, stitch, and areal densities, while higher cotton content decreased these properties. Longer loop lengths resulted in lower course, wale, stitch, and areal densities. Fabrics with more cotton showed higher shrinkage, while those with more polyester had minimal shrinkage. The study highlights that blend ratio and loop length are key factors in determining fabric properties and suitability for specific applications.