Redispersible dried hydroxyapatite particles with grafted pH-sensitivity polymer brushes of poly(styrene-co-4-vinylpyridine)

The Synthesis and Characterization of Hydroxyapatite-β-Alanine Modified by Grafting Polymerization of γ-Benzyl-L-glutamate-N-carboxyanhydride

“…The amino-functionalised HAP (HAP-NH 2 ) was obtained by the strong coordination of the carboxyl groups of alanine to the Ca 2+ ions of HAP. The structure of HAP-NH 2 was characterised by elemental analysis and TEM and proved to be consistent with that given in [20]. HAP-PBLG was obtained by the ring-opening polymerization of BLG-NCA, initiated by the amino-functionalised HAP.…”

“…From Figure 2, it could be observed that the HAP powder presented wide diffraction peaks, which were due to the low degree of crystallinity induced in the sample [20]. The powder X-ray diffraction patterns of HAP, HAP-NH 2 , HAP-5, and HAP-20 were shown in Figure 2.…”

In situ functionalization of hollow mesoporous hydroxyapatite with thermal-responsive on–off gates in supercritical CO2

“…Li et al prepared stimuli-responsive hybrid HAP particles by graing pH-sensitive polystyrene-co-4-vinylpyridine brushes onto HAP. 18 Wei et al synthesized HAP nanoparticles graed by thermal-responsive poly(N-isopropylacrylamide) (PNIPAAm) brushes, and the hybrid materials could be used in tissue engineering. 19 As a most widely studied thermal-responsive polymer, PNIPAAm has been extensively employed in biomedicine eld.…”