Influence of Polydopamine Coating on Deposition of Hydroxyapaite on Oxidated Titanium Alloy

Journal of Shanghai Jiaotong University ›› 2013, Vol. 47 ›› Issue (05): 795-799.

• Metallography and Metallurgical Technology • Previous Articles Next Articles

Influence of Polydopamine Coating on Deposition of Hydroxyapaite on Oxidated Titanium Alloy

LIU Bin1,2,RAN Haiqiong1,LI Zhangpeng2,WANG Jinqing2,YANG Shengrong2

(1.School of Stomatology, Lanzhou University, Lanzhou 730000, China; 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics,
Chinese Academy of Sciences, Lanzhou 730000, China)

Received:2012-09-03 Online:2013-05-28 Published:2013-05-28

Abstract

Abstract:

This work concentrates on the influence of polydopamine (PDA) coating on the bio-induced deposition of hydroxyapaite (HA) on the surface of medical titanium (Ti) alloy pre-treated by anodic oxidation (AO) and microarc oxidation (MAO). Ti alloy was firstly treated by AO and MAO, respectively, and then modified with PDA coating; after that, all samples were immersed into the simulated body fluid (SBF) for depositing HA bioactive coatings. The morphologies, elemental compositions and microstructures were characterized by field-emission scanning electron microscopy, X-ray photoelectron spectroscopy, Xray powder diffraction. Upon AO and MAO treatments, nanotubes and micro holes are formed on Ti alloy, respectively. After being further modified by PDA, the deposition ability of HA on Ti alloy is significantly improved, and the arrangement of HA is relatively compact and ordered.

Key words: Ti alloy, oxidation treatment, polydopamine, hydroxyapaite (HA)

CLC Number:

TG 178

LIU Bin1,2,RAN Haiqiong1,LI Zhangpeng2,WANG Jinqing2,YANG Shengrong2. Influence of Polydopamine Coating on Deposition of Hydroxyapaite on Oxidated Titanium Alloy[J]. Journal of Shanghai Jiaotong University, 2013, 47(05): 795-799.

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Influence of Polydopamine Coating on Deposition of Hydroxyapaite on Oxidated Titanium Alloy

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