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

Table 1

Average diameter of the polystyrene templates by varying the PVP/styrene-ratio.

PVP/styrene-ratio	Average diameter (nm)*
0.0050	900 ± 30
0.0075	475 ± 4
0.010	355 ± 6
0.050	281 ± 1
0.10	228 ± 1
0.15	178 ± 1

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