Effect of Thermal Treatment on the Morphological Structure and Properties of Polyester Hollow Staple Fibers

Abstract

The effect of thermal treatment conditions namely water pick-up, temperature and time on the morphological structure, bursting strength and wearabilities of polyester (PET) hollow staple fiber were investigated. The results show that changes in water pick-up, temperature and time may lead to an obvious change in bursting strength, warmth retention and water-vapor permeation of fabric. Scanning Electronic Microscope (SEM) analysis indicates that both thermal treatment temperature and time have a significant effect on the morphological structure and hollow structure, and the critical maximum time mostly depends on the applied temperature. Furthermore, the bursting strength, warmth retention and water-vapor permeation of polyester (PET) hollow staple fiber knitted fabric are determined by its morphological and hollow structure.

Effect of Thermal Finishing on the Mechanical Properties of Hollow Polyester Fiber

“…Fabric thermal finishing is usually treated at high temperature with appropriate tensile stress, which could endow the fabric with high dimensional stability due to the removal of intermolecular cohesion. However, subsequently to the improvement of dimensional stability, the wearability of fabric would be significantly affected due to the changes in molecular orientation, crystallinity, morphological structure, physical and mechanical behaviors of fiber [1,5]. We proved in a previous work that, for thermal finishing, the damage of Porel TM fiber hollow structure would be more and more seriously with temperature rising [1].…”

“…As a typical represent of hollow polyester fiber, Porel TM fiber becoming more and more attractive for clothing due to its advantages like moisture permeability, antistatic property, thermal retention, lightweight and so on [1][2]. Because the fabric must subject to mechanical force during dyeing, finishing and wearing processes, so mechanical property is one of the most important behaviors of textile fiber [3][4].…”

“…However, subsequently to the improvement of dimensional stability, the wearability of fabric would be significantly affected due to the changes in molecular orientation, crystallinity, morphological structure, physical and mechanical behaviors of fiber [1,5]. We proved in a previous work that, for thermal finishing, the damage of Porel TM fiber hollow structure would be more and more seriously with temperature rising [1]. The present work is to investigate the effect of thermal finishing parameters and their synergistic effect on the breaking strength and breaking elongation of pure Porel TM fiber.…”