Effect of silver ion implantation on surface physicochemical properties of composite materials based on polylactic acid and hydroxyapatite

Synthesis and visible-light photocatalytic degradation of Ag3PO4/AgBr/hydroxyapatite ternary nanocomposites prepared from oyster shells

“…In Fig. 4b, two distinct peaks appear at 367.87 eV and 373.87 eV, which are generated by Ag + 3d 5/2 and Ag + 3d 3/2 , respectively, 23,24 indicating that Ag exists in the form of Ag + in the material. The signal peaks at 530.7 eV and 531.9 eV in Fig.…”

Efficient Visible-Light-Responsive Ag3PO4/g-C3N4/Hydroxyapatite Photocatalyst (from Oyster Shells) for the Degradation of Methylene Blue: Preparation, Properties and Mechanism

“…In Figure 4d, there are two obvious peaks at 367.87 eV and 373.87 eV in the Ag 3d region, which are generated by Ag + 3d 5/2 and Ag + 3d 3/2 , respectively. Their appearance is due to Ag + in the complex, indicating that Ag exists in the form of Ag + in the material [37,38]. The O 1s peaks at 530.7 eV and 531.9 eV in Figure 4e are generated by lattice oxygen and hydroxyl oxygen in the composite material, respectively [39].…”

3D Printing of Porous Degradable Scaffolds with Polylactic Acid‐Loaded Bioactive Glass and Calcium Sulfate Hemihydrate for Bone Defect Repair

“…[42] Before reaching the high temperature of polymer structure destruction, the heating temperature is proportional to the crystallinity and molecular weight of PLA, and the high crystallinity and molecular weight of PLA significantly prolong the degradation time of PLA. [43] Raman spectral analysis showed that with the increase of printing temperature, the peak of PLA at about 1725 cm −1 showed an obvious red-shift, indicating that the crystallinity of PLA increased with the increase of print temperature, which is directly controlled by the hydroxyl and carboxyl end-groups of PLA, and the crystal process of PLA at the corresponding position of the polymeric backbone (Figure S5, Supporting Information). [44,45] In light of this, we carried out 3D printing of scaffold molding at the temperature as low as possible, and the lowest temperature we explored that could be smoothly printed was 104 °C, which accelerates the degradation rate of PLA and matches the rate of bone regeneration.…”