The Effect of Multiwalled Carbon Nanotubes on the Thermal Conductivity and Cellular Size of Polyurethane Foam

Table 4

Microstructural results of foam nanocomposites.

Type of property	Neat PU	1 wt.% unmodifed MWCNTs	3 wt.% unmodifed MWCNTs	3 wt.% modified MWCNTs
Cell type	Closed	Closed	Closed	Closed
Symmetry of structure	Asymmetric	Asymmetric	Asymmetric	Asymmetric
Cell size (μm)	714	616	380	240