Conductive Functional Biscrolled Polymer and Carbon Nanotube Yarns


Biscrolling aligned electrospun fiber (AEF) sheets and carbon nanotube (CNT) sheets were fabricated for conductive, functional yarns by a versatile dry composite method. Our biscrolling (twist-based spinning) method is based on spinnable polymer fiber sheets and spinnable CNT sheets unlike the previous biscrolling technique using unspinnable nanopowders and spinnable CNT sheets. The CNT sheet in composite yarns acted as effective electrical wires forming dual Archimedean multilayer rolled-up nanostructures. The weight percent of the electrospun polymer fibers in the composite yarns was over 98%, and the electrical conductivity values of the composite yarns was 3 orders higher than those of other non-conducting polymer/CNT composite fibers which were electrospun from polymer solutions containing similar loading of CNTs. We also demonstrate that biscrolled yarns having various structures can be fabricated from spinnable AEF sheets and spinnable CNT sheets.



Carbon nanotubes, Composite yarns, Biscrolled yarns, Electric conductivity, Polymers

Funded in part by Technology Development Program (10038599), and the MSIP-US Air Force Cooperation Program (2013K1A3A1A32035592) in Korea and Air Force Grant AOARD-10-4067, Air Force Office of Scientific Research grant FA9550-09-1-0537, and Robert A. Welch Foundation grant AT-0029 in the USA.


©2013 The Royal Society of Chemistry. This article may not be further made available or distributed.