Twisted CNT Yarn with Great Potential for Smart Textile Applications: CNT smarttextiles nanomaterials ACS_AMI
By Shaheer RehanJul 28 2022Reviewed by Megan Craig, M.Sc. Carbon nanotube yarn is highly coveted in the smart textiles industry and multifunctional composites because of its light weight and versatility. However, its production is quite challenging due to the loose packaging of carbon nanotubes inside the CNT arrangements.
What is Carbon Nanotube Yarn? Researchers have recently focused on providing numerous sophisticated functionalities to smart textiles using carbon nanotubes. Challenges in Obtaining Properties of Individual CNTs on a Macro Level Different techniques such as tension induction and annealing, twisting, solvent or polymer infiltration, and capillary densification have been explored to reproduce the excellent individual carbon nanotube qualities on a macro scale. These techniques use the principle of improving the transfer of load among carbon nanotube bundles by raising the overall van der Waals forces.
Enhancing the Qualities of Macroscopic Carbon Nanotube Yarn Physical densification is an effective and facile way to enhance load transmission among carbon nanotube bundles by increasing the van der Waal forces and closing the gap among macroscopic carbon nanotube yarn as well as individual carbon nanotubes.
Why Use Acetone? Acetone is an organic solvent having reduced surface tension. The superior wettability and strong affinity to carbon nanotube yarn make acetone an ideal choice for minimizing inter-CNT interactions. The densified arrangement of the carbon nanotube bundles inside the acetone-infiltrated carbon nanotube yarn increased elastic modulus and tensile strength by 887.5 and 185 percent, respectively. Large diameters of the developed carbon nanotube yarn made it appropriate for it to be used commercially in textile applications.
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