Graphene nanotubes for conductivity in PET fibres
The Luxembourg-based manufacturer of graphene nanotubes OSCiAL has partnered with the Taiwan-based speciality fibre supplier YAO to further develop polyethylene terephthalate (PET) fibres. Combined with graphene nanotubes they offer superior characteristics and functionality regarding flexibility, durability and hypoallergenic properties as well as meeting work safety standards due to their electrostatic discharge protection. This makes them ideal for clean rooms and workwear, among other potential fields of use.
PET fibres, valued for their high strength, low weight, and resistance to moisture, UV radiation, and chemicals, are essential in various high-performance applications. But electronics, clean room environments, and industrial workwear demand an additional functionality for insulative fibres: electrostatic discharge protection. Traditionally, metal wires or carbon black were used to achieve conductivity in thermoplastic polymer fibres, which often limited design options, could cause allergic reactions, and could result in difficulties with colour fastness, especially under rigorous testing standards such as AATCC TM61. More importantly, the physical properties of carbon black-based conductive fibre are insufficient for this purpose; the fibre must be processed into a composite yarn before weaving.
Taiwan-based YAO I Fabric, a prominent manufacturer of specialty fibres, has unveiled innovative conductive PET fibres with the brand name FLEX Yarn that are enhanced with TUBALL graphene nanotubes from OCSiAl. With a nanotube dosage of just 0.001 to 0.05 wt.%, the yarn exhibits stable electrical resistances of 105~106Ω/cm and 102~103Ω/cm, while retaining its flexibility, colour vibrancy, and hypoallergenic properties. Ready-to-use nanotube-based solutions drive streamlined production by allowing nanotube integration in unique carbonisation fusion technology (CFT) spinning processes, saving both time and cost for customers.
“The ultralong structure of graphene nanotubes allows them to form a 3D network inside the material throughout its entire volume, ensuring uniform conductivity across the fibre without carbon release. This enhances anti-static and electromagnetic interference (EMI) protection without compromising colour or comfort,” says Ray Lu, Senior Manager at YAO I Fabric.
“The series of FLEX Yarns with graphene nanotubes offers a sustainable solution, combining the durability and recyclability of PET with the high efficiency of TUBALL at an ultralow dosage. The enhanced functionality of this fibre makes it a multipurpose material for high-tech applications,” adds Otis Wang, General Manager of YAO.
“Graphene nanotube-enabled PET fibres are an ideal material for use in foldable electronic components, wearable tech, and protective clothing,” comments Albert Lin, Sales Director Taiwan, OCSiAl Group. “These fibres deliver a unique combination of aesthetic appeal, comfort, and functional performance for modern industrial needs.”
About OCSiAl
Headquartered in Luxembourg, the company is a leading manufacturer of graphene nanotubes, also known as single wall carbon nanotubes. They produce high-purity graphene nanotubes on an industrial scale under the TUBALL brand name. OCSiAl has developed and is marketing globally a wide range of nanotube products for electrochemical power sources and various polymers and creates fundamentally new products based on them.
About YAO I Fabric
Founded in 1973 in Taiwan, YAO I Fabric is a leading manufacturer of high-performance monofilaments and technical textiles. A diverse product range includes fishing lines and sports string, industrial yarn, pet mats, automotive seat covers, sound-absorbing and stretch materials, and textiles for electronics and footwear. With factories in Taiwan, China, and Vietnam, the company serves industries from automotive to electronics, delivering durable, eco-friendly textile solutions.
Source: OSCiAl
Caption: The PET fibres come in customisable colour options and are expected to be used in foldable electronic components, wearable tech and protective clothing. (Image: OSCiAl)