THERMOGRAVIMETRIC, MICROSCOPIC AND MECHANICAL ANALYSES OF PBT AND PET YARNS

In this study, thermogravimetric, microscopic and mechanical properties of different types of polyester yarns were investigated and compared. To this goal, PET based regular polyester yarn and polyester yarns modified for various specialities (flame-retardant, UV protective and antibacterial) and PBT yarn were selected. According to the results, it was determined that PBT had a lower Tdi value, higher char residue, lower tensile strength compared to regular PET and similar surface characteristics to regular PET. Among the modification processes, only the flame retardancy process was found to affect the thermal property.