Influence of lengths of millimeter-scale single-walled carbon nanotube on electrical and mechanical properties of buckypaper

Table 1 The average thickness and mass densities of buckypapers prepared from SWCNT forest with different height

Height of SWCNT forest (μm)	Buckypaper	Average thickness (μm)	Mass density (g/cm³)
350	As-dried	72	0.40
	As-dried	62	0.37
	Compressed at 20 MPa	46	0.50
	Compressed at 100 MPa	41	0.61
700 μm	As-dried	58	0.44
	As-dried	73	0.33
	Compressed at 20 MPa	47	0.48
	Compressed at 100 MPa	39	0.62
1500 μm	As-dried	73	0.32
	As-dried	92	0.25
	Compressed at 20 MPa	49	0.50
	Compressed at 100 MPa	38	0.65

For each height of SWCNT forest, two as-dried buckypapers, one paper after compression at 20 MPa, and one paper after compression at 100 MPa have been prepared. The thickness of the buckypaper was measured by the stylus method instrument. The average thickness of five measurements was obtained from both of the center and the edge of buckypapers.