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Marwa Souissi,Ramzi Khiari,Mounir Zaag,Nizar Meksi,Hatem Dhaouadi 한국섬유공학회 2022 Fibers and polymers Vol.23 No.10
Bicomponent polyesters filaments are increasingly used in the textile fields due to their technical and highperformances (mechanical, physical, and chemical properties) comparing to conventional polyethylene terephthalate andElasthaneTM thermoplastic polyether polyurethane used in denim fabrics. The purpose of this work is to evaluate the stabilityof the mechanical and physical properties of bicomponent filaments before and after dyeing with three disperse dyes havingdifferent molecular weights (low, medium, and high). Bicomponent filaments composed of two filaments extruded side byside with two unequal proportions 60 % polyethylene terephthalate (PET) and 40 % polytrimethylene terephthalate (PTT) areused in this study. A full factorial experimental design was established to analyze the dyeing parameters effect (temperatureand pH value of dye bath) and optimize the color strength (K/S) while maintaining the stability of the mechanical andphysical properties of bicomponent filaments. After dyeing, these properties were evaluated and their stability was provedusing several analysis techniques such as SEM, DSC, and XRD.