Multiscale Engineering of Carbon Nanotube Fibers

Fabrication of ribbon-like films of orientation-controlled carbon nanotube/polymer composite using a robotic dispenser

“…Therefore, bulk fabrication of aligned CNT films is expected to be important for many applications to get anisotropic and high thermal/electrical conductivity along the CNT orientation direction. 8) Various attempts have been made in the past to increase the degree of CNT alignment to realize their theoretical properties using different methods such as cutting, 9) electrophoresis, 10) melt processing, 11) using crowding effect, 12) chemical vapor deposition, 13,14) templated growth, 15) solid spinning of CNT forest, 16,17) magnetic field to induce alignment, 18,19) flow coating, 20) and mechanical stretching. 21) These alignment works have proven to be effective in improving the thermal, electrical, and mechanical properties of CNT and CNT/polymer composite.…”

Hybrid FRP/CNT veil hierarchical composites with enhanced interlaminar properties and integrated multifunctionalities

“…In CVD direct-spinning process ('Windle process'), the dilution in the gas phase of the very long CNTs reduces their entanglements, thus enabling the drawing of the in-form fiber and alignment of the building blocks [121]. The rate at which the aerogel is drawn is a fundamental parameter controlling the final configuration of the fiber (random or oriented), and the dilution of the aerogel through either slowing down the precursor feed rate or speeding up the hydrogen carrier gas flow rate enables much faster fiber drawing rates (Figure 2-10 [122]).…”