Preparation and Characterization of Polyester Staple Yarns Nanowrapped with Polysulfone Amide Fibers

Abstract

In this study, a novel approach and the related electrospinning equipment were developed to fabricate a new type of polyester staple yarn wrapped with poly(sulfone amide) (PSA) fibers at the nanoscale. As the number of tubes of spinnerets, electrospinning voltage, and rotation speed of the funnel collector have effects on the structure and properties of the nanowrapped yarns, three series of wrapped yarns were prepared using the self-developed electrospinning and wrapping equipment; these wrapped yarns at the nanoscale were characterized systematically by scanning electron microscopy (SEM), thermogravimetry (TG), and infiltration evaluation. The three-dimensional electric field of the electrospinning system used for the nanowrapped yarn was simulated to model the electric fields of different electrospinning spinnerets. Our experimental results showed that the mechanical, thermal, and hygroscopicity properties of the nanowrapped yarns fabricated in this work were clearly improved obviously in comparison with those of single polyester yarns. The nanowrapped yarn has a core−shell structure composed of both nanoscale PSA fibers and micron-scale poly(ethylene terephthalate) (PET) fibers, so that it can unite and inherit the excellent thermal properties of the PSA and the excellent mechanical properties of polyester yarns. The newly developed nanowrapped yarns have potential applications in the development of high-performance industrial textiles and apparel in the future.

Preparation and Characterization of Electrospun PAN/PSA Carbonized Nanofibers: Experiment and Simulation Study

“…Polysulfone amide (PSA) is a representative polymer for new-type high-temperature resistant fibers, and the micron-sized PSA fibers have been widely used [ 26 , 27 , 28 , 29 ]. Polyacrylonitrile (PAN) is a conventional chemical fiber and is an important material for the preparation of carbon fiber precursors [ 30 , 31 , 32 ].…”

Continuous Yarn Electrospinning

“…A subsequent, two-nozzle variation is especially widespread and has been adopted in various works [28][29][30][31][32][33]. The first nozzle is arranged opposite to the second, with both nozzles most commonly being charged with opposite voltages (Figure 4b), although some authors, e.g., Jin et al [29] and Tong et.…”

Investigating the wicking behavior of micro/nanofibrous core‐sheath PET–PAN yarn modified by dimethyl 5‐sodium sulfoisophthalate

“…5 Nanofibrous coresheath yarns are of flexible materials which have advantages of both yarn and sheath components. 6,7 Liquid transfer is an evitable phenomenon in porous structures such as fibrous materials. Therefore, studying the wicking behavior and water absorption of fibrous structures is of great importance in a wide range of applications especially in filtration systems, biomedical, 8,9 tissue engineering, 10 electronics, 11 and apparel.…”

“…Therefore, studying the wicking behavior and water absorption of fibrous structures is of great importance in a wide range of applications especially in filtration systems, biomedical, 8,9 tissue engineering, 10 electronics, 11 and apparel. 7 The wicking behavior in a fibrous material mainly depends on capillary size, capillary continuity, and surface characteristics such as contact angle. 12,13 The height of wicked water can be calculated theoretically based on Lucas-Washburn equation which relates the maximum height of wicked water to the surface tension, contact angle, and capillary radii.…”

“…KM Player software was used to capture the wicking rise at the defined times of 1, 2, 3, 4, 5,6,7,8,9,10,15,20,25,30,35,40, 45, 50, 60, 70, 80, 90, 100, 110, 130, 150, 170, 190, 220, 250, 280, and 310 s. Digimizer software was used to accurately determine the wicking heights.…”