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Table 2 Physicochemical characteristics of the multi-walled carbon nanotubes (MWCNT) used in the study

From: Coating carbon nanotubes with a polystyrene-based polymer protects against pulmonary toxicity

  

NT1

NT2

NT3

Coating polymer (50/50 wt%)

None

Carboxylic polyacid polymer

PMMA a polymer

Diameter (nm)

 

12 ± 1

12 ± 1

12 ± 1

 

0-15 nm

85%

85%

85%

Size distribution (diameter)

15-30 nm

13%

13%

13%

 

>30 nm

2%

2%

2%

Length (μm)

 

0.1-13

0.1-13

0.1-13

Metallic impurities

Aluminium (%)

3.2

1.15

1.25

 

Iron (%)

2.45

0.75

0.85

Specific surface (m 2 /g)

227.4

54.1

34

Agglomerate size - mean diameter (%<10 μm)

338 (0.13)

118 (1.45)

267 (0.83)

  1. aPolystyrene polybutadiene polymethylacrylate (PMMA).