1. Impartation of hydroxyapatite formation ability to ultra‐high molecular weight polyethylene by deposition of apatite nuclei
- Author
-
Takeshi Yabutsuka and Shigeomi Takai
- Subjects
02 engineering and technology ,01 natural sciences ,Apatite ,Electrophoretic deposition ,chemistry.chemical_compound ,Apatites ,Materials Testing ,ApN-deposited UHMWPE ,pH ,anodes ,Adhesion ,Polyethylene ,021001 nanoscience & nanotechnology ,oxygen plasma treatment ,electric field ,Ca₁₀(PO₄)₆(OH)₂ ,Body Fluids ,Electronic, Optical and Magnetic Materials ,adhesion ,visual_art ,hydroxyapatite formation ability ,visual_art.visual_art_medium ,ApN-dispersed ethanol ,HAp layer adhesion ,0210 nano-technology ,Porosity ,Layer (electronics) ,hormones, hormone substitutes, and hormone antagonists ,Biotechnology ,animal structures ,Materials science ,direct precipitation ,Surface Properties ,Simulated body fluid ,precipitation ,010402 general chemistry ,Article ,pH value ,ultrahigh molecular weight polyethylene ,Humans ,Electrical and Electronic Engineering ,polymers ,reaction solution ,Ultra-high-molecular-weight polyethylene ,calcium compounds ,HAp formation ability ,plasma materials processing ,porous UHMWPE ,adhesion strength ,0104 chemical sciences ,phosphorus compounds ,electrophoretic deposition ,Durapatite ,chemistry ,Chemical engineering ,EPD ,electrophoretic coatings ,apatite nuclei ,adhesives ,Polyethylenes ,Porous medium ,porous materials ,electrochemical electrodes ,cathodes - Abstract
The authors aimed to impart hydroxyapatite formation ability to ultra-high molecular weight polyethylene (UHMWPE) by deposition of apatite nuclei (ApN) by the following two methods. The first method was electrophoretic deposition (EPD). A porous UHMWPE was placed between electrodes in the ApN-dispersed ethanol and constant voltage was applied. By this treatment, the ApN were migrated from anode-side surface to the cathode one through the pores by an electric field in the pores of the UHMWPE and deposited inside the pores. The second method was direct precipitation (DP) of the ApN. A porous UHMWPE was soaked in a simulated body fluid (1.0SBF) with higher pH than the physiological one and subsequently, its temperature was raised. By this treatment, the ApN were precipitated in the pores of the UHMWPE directly in the reaction solution. For both methods, the ApN-deposited UHMWPE showed HAp formation ability not only on the top surface but also inside the pores near the surface of the porous UHMWPE in 1.0SBF although the adhesion strength of thus-formed HAp layer was higher in the case of the EPD in comparison with the DP, oxygen plasma treatment before the DP enabled to achieve a similar level of the HAp layer adhesion to the EPD., Special Section: Selected Extended Papers from the International Conference of the 19th Asian BioCeramic Symposium
- Published
- 2020