In Situ Hydrogel Growth on Flame-Sprayed Hydroxyapatite (HA)/TiO₂-Coated Stainless Steel via TiO₂-Photoinitiated Polymerization.

ABSTRACT: Hydroxyapatite (HA) coatings improve implant bioactivity but suffer from brittleness and limited functionality. Here, we report a hybrid coating strategy combining flame-sprayed HA/TiO₂ with in situ hydrogel growth. TiO₂ incorporated into the HA matrix acted as a photocatalytic initiator for acrylamide polymerization under UV. Unlike conventional hydrogel coatings that require added photoinitiators or separate surface modification steps, TiO₂ incorporated into the HA layer serves as a built-in photocatalytic initiator, enabling direct polymerization of acrylamide monomers on the sprayed surface. The resulting HA/TiO₂-hydrogel coatings exhibited a continuous hydrogel layer with intimate contact to the ceramic surface, as evidenced by SEM cross-sec

SUBMITTER: Chokethawai K 

PROVIDER: S-EPMC12564610 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature