Table 3 Water surface density, \({n}_{{H}_{2}O}\) (given as water molecules per nm2) for the two hydration conditions considered.
From: On the surface effects of citrates on nano-apatites: evidence of a decreased hydrophilicity
Materials | \({{\boldsymbol{n}}}_{{{\boldsymbol{H}}}_{{\boldsymbol{2}}}{\boldsymbol{O}}}\), (fraction irreversible by outgassing at 323 K) | \({{\boldsymbol{n}}}_{{{\boldsymbol{H}}}_{{\boldsymbol{2}}}{\boldsymbol{O}}}\), (fraction reversible by outgassing at 323 K) |
|---|---|---|
HA1 | 4.4 ± 0.5 | 8.2 ± 0.7 |
HA2 | 4.1 ± 0.5 | 8.4 ± 0.7 |
Cit–HA–4 h | 7.9 ± 0.7 | 6.3 ± 0.6 |
Cit–HA–24 h | 3.1 ± 0.4 | 5.8 ± 0.6 |
Cit–HA–96 h | 3.5 ± 0.4 | 4.6 ± 0.5 |
