Synthesis of Hollow Silica Nanospheres by Sacrificial Polystyrene Templates for Thermal Insulation Applications

Table 2

Average thermal conductivity of the four samples created by various coating procedures.

Sample name	Average thermal conductivity (mW/(mK))*
A	21 ± 3
B	21 ± 1
C	23 ± 2
D	20 ± 2

 *The uncertainties are given as two times the standard deviation of the mean, that is, with a confidence interval of 95.45%.