TY - JOUR TI - Investigation of frictional impact on polyester yarn during knitting AU - Afzal, Ali AU - Waqar Rajput, Abdul AU - Jamshaid, Hafsa AU - Hussain, Sajid AU - Sidra Batool, Syeda AU - Ali, Usman T2 - Industria Textila AB - The usage of polyester (PET) in fabrication is increasing day by day due to its properties, ease of physical and chemical modification. The aim of this work is to understand the effect of temperature on Polyester (PET) during knitting. For checking the rise of temperature Infrared (IR) camera is used. Microscopic images are used for studying the effect of temperature on fibre/yarn structure. Morphological analysis is also done by X-ray diffraction (XRD) which shows disturbance of polymeric chains, causing change in crystal size due to elevated temperature. The beads formation and filament breakage are clearly seen in images. Due to this knitting fault, shade variation after dyeing occurred. It is concluded that structural morphology of polyester yarn changes due to friction of yarn with knitting machine parts. Fabric appearance and fabric quality also disturbed which leads to rejections and high losses. DA - 2021/12/21/ PY - 2021 DO - 10.35530/IT.072.06.1785 DP - DOI.org (Crossref) VL - 72 IS - 06 SP - 595 EP - 600 SN - 12225347 UR - http://revistaindustriatextila.ro/images/2021/6/02%20ALI%20AFZAL%20Industria%20Textila%206_2021.pdf Y2 - 2021/12/28/08:02:05 ER -