Electro-mechanical and Polarization-Induced Antibacterial Response of 45S5 Bioglass-Sodium Potassium Niobate Piezoelectric Ceramic Composites.

Besides the excellent osteoconductivity and biocompatibility of 45S5 bioglass (BG), poor mechanical and electrical properties as well as susceptibility toward bacterial adhesion limit its widespread clinical applications. In this context, the present study investigates the effect of addition of piezoelectric sodium potassium niobate (NaKNbO; NKN) on mechanical, dielectric, and antibacterial response of BG. BG-NKN ( = 0, 10, 20, and 30 vol%) composites were synthesized at 800 °C for 30 min.

Antibacterial and cellular response of piezoelectric NaKNbOmodified 1393 bioactive glass.

In the present study, the combined effect of addition of varying concentrations (10-30 vol%) of biocompatible piezoelectric NaKNbO (NKN) as well as electrostatic and dynamic pulsed electrical treatment on antibacterial and cellular response of 1393 bioactive glass (1393 BG) has been examined. The phase analyses of the sintered (at 800 °C for 30 min) samples revealed the formation of 1393 BG - NKN composites without any appearance of secondary phases. The addition of 10-30 vol% NKN significantly improved the mechanical behaviour of 1393 BG like, hardness (1.

Multifunctional Response of Piezoelectric Sodium Potassium Niobate (NKN)-Toughened Hydroxyapatite-Based Biocomposites.

In this study, hydroxyapatite (HA)-sodium potassium niobate (NKN) composites with varying concentrations of NKN (10, 20, and 30 wt %) were optimally developed at 1075 °C for 2 h. Detailed microstructural analyses have been performed by means of scanning and transmission electron microscopy. The maximum fracture toughness, hardness, and compressive and flexural strengths were obtained to be ∼209, ∼93, ∼112, and ∼88%, respectively, for the HA-30 wt % NKN composite compared to monolithic HA.