Table 1 Contact angle and surface free energy of B particles, SA/B composite particles, and SA@B composite particles.
Samples | Contact angle (°) | Surface free energy (mJ m-2) | |||
---|---|---|---|---|---|
Water | Diiodomethane | \({\text{r}}_{\text{s}}^{\text{d}}\) | \({\text{r}}_{\text{s}}^{\text{p}}\) | \({\text{r}}_{\text{s}}\) | |
B | 18.7 | 126.1 | 45.1 | 12.0 | 57.1 |
SA/B | 23.5 | 122.6 | 2.77 | 75.6 | 78.3 |
SA@B | 145.0 | 27.9 | 2.14 | 80.4 | 82.5 |