Table 1.
Properties of CNTs used in this study
| CNT ID | CNT Type |
State | Puritya | Metal Contentb |
Outer Diameter (nm) |
Inner Diameter (nm) |
Length (µm) |
|---|---|---|---|---|---|---|---|
| MW-O | MWCNT | Raw | >95% | <6% | 20–30 | 5–10 | 10–30 |
| MW-P | MWCNT | Purified | >98% | <2% | 20–30 | 5–10 | 10–30 |
| MW-F | MWCNT | Functionalized | >99.9% | <0.01% | 20–30 | 5–10 | 10–30 |
| MW-15 | MWCNT | Raw | >95% | <5% | 7–15 | 3–6 | 0.5–200 |
| MW-20 | MWCNT | Raw | >95% | <5% | 10–20 | 5–10 | 0.5–200 |
| MW-30 | MWCNT | Raw | >95% | <5% | 10–30 | 5–10 | 0.5–500 |
| MW-100 | MWCNT | Raw | >95% | <5% | 60–100 | 5–10 | 0.5–500 |
| MW-OH | MWCNT | Functionalized | >95% | <1.5% | 8–15 | 3–5 | 10–50 |
| MW-COOH | MWCNT | Functionalized | >95% | <1.5% | 8–15 | 3–5 | 10–50 |
| MW-15Gc | MWCNT | Annealed | >97% | <1% | 7–15 | 3–6 | 0.5–200 |
| MW-Mitsui | MWCNT | Raw | >98% | <1% | 20–70 | NA | NA |
| MW-Arc | MWCNTd | Raw | <50% | 0% | 5–10e | NA | NA |
| SW | SWCNT | Raw | <50% | <10% | 1.1 | NA | 0.5–100 |
| SW-65 | SWCNT | Purified | <75% | <10% | 0.8 | NA | 0.45–2 |
a
CNT content reported by manufacturer. MW-P and MW-F calculated assuming no amorphous carbon remaining.
b
Metal content reported by manufacturer except for MW-F and MW-P determined using energy dispersive X-ray spectroscopy and MW-15G using thermogravimetric analysis.
c
MW-15 annealed at ~2000°C in UHP He.
d
Synthesized using arc method; all others are CVD.
e
Obtained from TEM images; all others reported by manufacturer.