Page 306 - Carbon Nanotube Fibres and Yarns

294 Index

Carbon nanotube (CNT) fibers and yarns post-spinning treatments, 8
(Continued) potential applications, 7
analytic models sensors, 215
continuum model of twisted yarn, structure, 8–9
185–187 theoretical and achieved fiber strength,
intertube contacts based fracture model, 174–176, 175t
187–189 wet spinning, 8
Monte Carlo model, 189–192 floating catalyst synthesis method, 37
two-scale damage mechanics model, catalyst and growth promoter, 38–42
187 synthesis temperature, 42–46
assembly and fiber production forest-based yarns, 183–184
bath-spinning, 47 geometry, 137–155
direct-spinning, 47 graphene, 1, 2f
rotating-anchor spinning method, 47 length, 159–160
sock assembly, 46–47 MWNTs, 250
bundles, 187, 193f nanocomposite material, 151–152
categories, 2 nanoscale fibers, 3
chirality, 1 load transfer between nanotubes,
electrochemical properties, 250–253 192–194
diameter and linear density, 138–140 at macroscopic scale, 183–184
dry-spun, 172f mechanical, electrical, and thermal
dynamic/tensile properties properties, 9
frictional slippage, 168, 169f microstructural evolution
quasistatic test, 167 CGMD, 194, 197–200
sonic and quasistatic moduli, 168, 169f hierarchical morphology, 200–202,
sonic strain rates, 168 201f
strain rate, 167 molecular dynamics, 195–197
tenacity, dynamic, and quasistatic multi-scale modeling, 194
moduli and modulus ratio, 168–169, nanotube packing density, bulk density,
169t and porosity
electrical conductivity bulk density, 142
electrical resistivity, 170 close hexagonal packing of parallel
fibers vs. yarns, 172, 173t cylinders, 141, 141f
MWNT-based macrostructures, 170 die-drawn yarns, 145–146, 146–147f
porosity, 171 fiber misalignment, 142
roller-press method, 170 fiber packing fraction, 142
specific conductivity, 170–172 liquid-densified fibers, 147–149,
temperature dependence of resistivity, 148–149f, 150t
170, 171f minimum porosity, 141
yarn density, 171–172, 172f rub-densified yarns, 145, 146f
fibers, 3 twisted yarns, 1, 143–145f
commodity textile fibers, 176–177 van der Waals force, 143
direct spinning method, 7–8 van Wyk power relationship, 142
high-performance fibers, 176–177 MWNTs, 250
manufacturing process, 7–8 nanocomposite material, 151–152
metallic and nonmetallic properties, nanoscale fibers, 3
229–230 optimal twist angle, 186
monolayer graphene, 176 packing fraction, 142