Graphene oxide-coated amino-modified polyacrylonitrile to fabricate highly conductive fabrics

Abstract

Graphene conductive polyacrylonitrile (PAN) substrate is an important material, owing to its high strength, flexibility, and comfort. In this work, a PAN fabric was cationized with triethylene tetramine (TETA) for increased adsorption of anionic graphene oxide (GO), which mainly forms ionic bonds. The TETA-modified PAN (Amino-PAN) fabric was then treated with GO using a dipping method followed by in situ reduction of GO to obtain reduced graphene oxide (RGO). The electric conductivity of Amino-PAN fabrics was increased with the increasing of TETA modification temperature from 90°C to 110°C. A surface electric resistance of 0.61 kΩ cm−1 was obtained for 2 g L−1 GO and TETA modification performed at 110°C for 2 h. This resistance was considerably lower than that of the original PAN fabric for one cycle of the dipping–reduction GO treatment (1RGO-PAN, 42.69 kΩ cm−1) and six cycles of the dipping–reduction GO treatment (6RGO-PAN, 1.52 kΩ cm−1). The results revealed that the anionic GO was more easily adsorbed on the surface of the Amino-PAN fabrics than on the original PAN fabrics. The surface electric resistance of the 1RGO-Amino-PAN fabrics slightly increased from 0.61 to 0.79 kΩ cm−1 after 30 washing cycles. The results showed that the RGO-coated Amino-PAN fabric had excellent washability. Furthermore, the TETA modification process reduced the dipping–reduction times of the GO finishing PAN fabrics, and can be easily used in the production of RGO-based flexible conductive material.

Electrical properties and electromagnetic shielding effectiveness of cotton/antistatic polyester knitted fabrics treated with antibacterial finish

“…19 and Cao et al. 20 used reduced graphene oxide to coat knitted polyester and spandex fabrics and study the electrical conductivity of the fabric before washing and after repeated washing cycles. The unwashed fabrics showed very good electrical conductivity, but after repeated washing of two, four and eight washing cycles, the conductivity decreased.…”

“…The unwashed fabrics showed very good electrical conductivity, but after repeated washing of two, four and eight washing cycles, the conductivity decreased. In conclusion, from the literature review, it can be stated that there are many methods to obtain electrically conductive and electromagnetic shielding fabrics, such as using yarns made of copper, aluminium, stainless steel, etc., 11–15,21–23 carbon materials, 18,19,21,24 and/or metal nanoparticles, such as cobalt, nickel, aluminium, copper, silver, gold, titanium, and zinc, 3,6,7,10,23,25 or polyaniline and polypyrrole coatings 2–5,20 incorporated in the production of textiles used for technical applications, such as sensors, electrodes, hi-tech shielding fabrics, etc. Therefore, it can be seen that there is a lack of research on the electrical properties of textile fabrics suitable for everyday clothing.…”

“…17,18 Li et al 18 investigated textiles from carbon nanotube core-spun yarns and wool and evaluated their thermal and mechanical properties and approximately 20 dB electromagnetic SE, confirming their suitability for functional and wearable textiles; they even had much lower SE than 50 dB SE in a maternity dress with integrated metal fibers. Hou et al 19 and Cao et al 20 used reduced graphene oxide to coat knitted polyester and spandex fabrics and study the electrical conductivity of the fabric before washing and after repeated washing cycles. The unwashed fabrics showed very good electrical conductivity, but after repeated washing of two, four and eight washing cycles, the conductivity decreased.…”

Anti-pilling and anti-static bifunctional finishing of cashmere knitted fabric based on combinatorial foaming microcoating of anionic hydrophilic polyurethane

“…1 However, static and pilling accumulation cause problems in cashmere fabric because of its compact scale structure and good elasticity, which seriously affect wear performance and appearance. 2,3 Anti-pilling 4,5 and anti-static 6,7 finishing technologies for cashmere textiles have always been a subject of great interest in related fields. How to ensure that excellent natural styles are intact is essential to cashmere production.…”