Table 1.
Physicochemical properties of HAP before and after surface modification, Pip loading, coating, and conjugation.
| Sample | SBET (m2/g) a | Total Pore Volume b (cm3/g) | Mean Pore Size Diamter c (nm) | Weight Loss % wt. d | Weight Content % wt. e |
|---|---|---|---|---|---|
| HAP | 222 ± 3 | 0.815 | 12.8 | 10.69 ± 0.65 | - |
| HAP-P | 143 ± 3 | 0.501 | 11.6 | 11.46 ± 0.40 | 0.77 as P |
| HAP-Pip7.2 | 108 ± 3 | 0.372 | - | 28.78 ± 2.32 | - |
| HAP-P-Pip7.2 | 78 ± 3 | 0.356 | - | 31.76 ± 1.01 | - |
| HAP-Pip-9.3 | 83 ± 3 | 0.358 | 10.8 | 29.94 ± 0.89 | - |
| HAP-P-Pip 9.3 | 81 ± 3 | 0.358 | 10.4 | 31.30 ± 0.31 | - |
| HAP-Pip9.3-GA | 56 ± 3 | 0.231 | 11.2 | 31.83 ± 0.61 | 1.89 as GA |
| HAP-P-Pip9.3-GA | 79 ± 3 | 0.354 | 11.7 | 31.72 ± 0.62 | 0.42 as GA |
| HAP-Pip9.3-GA-FA | 70 ± 3 | 0.165 | 9.4 | 32.01 ± 1.45 | 0.18 as FA |
| HAP-P-Pip9.3-GA-FA | 61 ± 3 | 0.294 | 9.3 | 31.89 ± 1.16 | 0.17 as FA |
a Specific surface area measurement. b Pore volume from nitrogen adsorption measurements at 0.999 P/P°, c Mean size distribution based on the Brunauer–Emerett–Teller method, d,e Calculated from the thermogravimetric analysis.