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Detailed Program
Paper Number : BI-P05
Time Frame : 12:00~13:30
Presentation Date : Thursday, 27, November
Session Name : Biomaterials
Session Chair 1# : -
Session Chair 2# : -
Ti Surface Modification by Hydrothermal Method Using Various Solutions
Ms. Asywendi Rukini
Yeungnam University
Cellular behaviours in contact with implant are greatly affected by surface properties including hydrophilicity, roughness, texture and morphology[1-4]. Therefore surface modification on Ti surface gain interest among researchers to improve Ti osseointegrity and bioactivity. Sand blasting followed by acid etching treatment (SLA) have been used to increase surface roughness of implant where surface roughness increase with random surface texture and uncontrollable structure. While hydrothermal treatment has been proven as a convenient approach to prepare various inorganic materials with controllable morphology[5]. In the present study three different solutions are utilized on hydrothermal treatment to modify implant surface morphology in order to ibserve the effect of morphology change in each different solution on cell adhesion. Polished cp Ti disks was ultrasonicated in acetone, ethanol, and distilled water for 20 minutes each then hydrothermally immersed in three different solutions: NaOH (basic);HCl (acid); and H2O2(peroxide) with various temperature, time, and concentration. SEM observation showed that various morphologies appeared on the surface of sample that immersed in NaOH at 220oC where flakes shapes happened in 0.5M concentration for 1h, then transformed into nanowire shapes in 2M concentration after 4h. Macro size crater with porous-pit appeared on HCl sample where round porous-pit went irregular as temperature, HCL concentration and immersion time increase. While, H2O2 samples showed net-porous nanostructure morphology. EDX and XRD results confirm sodium titanate exists on the surface of NaOH sample, titanium hydride on HCl sample and TiO2 on H2O2 sample.
Acknowledgements :