Page 307 - Carbon Nanotube Fibres and Yarns

Index 295

periods, 183–184 high-strength CNT yarns, 5–7
piezoresistivity, 214–216 mechanics models, 9
premade CNTs, 8 piezo-resistivity, 9
property, 184 potential applications, 7
reinforcement effect, 8 sensors, 9
resistance changes, 214 surface, 244–245
resistive response, 229–230 structure, 8–9
vs. staple fiber spun yarn, 184–185 two-step manufacturing method, 7
strength, 155, 161 energy conversion mechanisms
structure and properties of, 1, 2f, 47–53 electrochemistry, 281–282
surface, 153 electromechanical, 280, 280f
SWNTs, 250 swelling by solvent and vapor,
synthesis, 7–8 280–281
tensile strength thermoexpansion by Joule heating, 281
densification methods, 163–165, 164f future prospects, 288
and elastic modulus, 2 performance metrics
nanotube length, 159–160 bandwidth, 284
nanotube strength, 158–159 cycle life, 284
post-spinning treatments, 165–167, efficiency, 284
166f energy/work density, 283
spinning conditions, 162–163 examples, 284, 285–286t
strength variability, 156–158, 157f output strain, 282
tensile testing conditions, 155–156, output stress, 283
156f power density, 284
twist, 161–162, 162f potential applications, 284–287, 287–288f
yarn diameter, 160–161 CNT yarn-based supercapacitors. See
testing, 155 Threadlike supercapacitors
thermal conductivity, 173–174 Coarse-grained molecular dynamics
Carboxyl group, 166–167 (CGMD), 184, 194, 197–200
CGMD. See Coarse-grained molecular Coaxial helix model, twisted staple yarn, 185
dynamics (CGMD) Coefficient of thermal expansion (CTE),
Charge-discharge curve, 255–257 228
Charge storage mechanism, 243, 265–266 COFs. See Covalent organic frameworks
Chemical sensor, 213–214 (COFs)
Chemical vapor deposition (CVD), 13, 37, Coiled yarn actuator, 284–287
142 Commodity textile fibers, 176–177
Chlorosulfonic acid (CSA), 66–67, 129, Commonwealth Scientific and Industrial
147–149, 166f Research Organization (CSIRO),
CNT yarn-based actuator, 271, 288 21–23
actuator, 271, 281 Conducting polymers (CPs), 247–248, 251,
advantages, 9 266, 271
artificial muscles, 9 Conductive textile actuator, 279
architectures Continuum elasticity theory, 189
fabric actuators, 278–279 Continuum mechanics model, 186
tensile actuators, 275–278 Conventional staple yarn, 184–185
torsional actuators, 276–277 Conventional textile fiber, 3, 17
vs. conventional textile yarns, 3–5 Conventional textile yarn, 159–160, 177,
failure mechanism, 3 192, 198–199