Titanium modified with layer-by-layer sol-gel tantalum oxide and an organodiphosphonic acid: A coating for hydroxyapatite growth

被引：45

作者：

Arnould, C. ^{[1
]}

Volcke, C. ^{[1
]}

Lamarque, C. ^{[1
]}

Thiry, P. A. ^{[1
]}

Delhalle, J. ^{[1
]}

Mekhalif, Z. ^{[1
]}

机构：

[1] Fac Univ Notre Dame Paix, Univ Namur, Res Ctr Phys Mater & Radiat PMR, Lab Chem & Electrochem Surfaces CES, B-5000 Namur, Belgium

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 336卷 / 02期

关键词：

Biomaterials; Apatite; Tantalum; X-ray photoelectron spectroscopy; Atomic force microscopy; Phophonic acid; Sol-gel; SELF-ASSEMBLED MONOLAYERS; SIMULATED BODY-FLUID; APATITE FORMATION; ALKANEPHOSPHONIC ACIDS; ELECTROCHROMIC DEVICES; THIN-FILMS; SURFACE; TA2O5; BIOACTIVITY; IMPLANTS;

D O I：

10.1016/j.jcis.2009.03.092

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Titanium and its alloys are widely used in surgical implants due to their appropriate properties like corrosion resistance, biocompatibility, and load bearing. Unfortunately when metals are used for orthopedic and dental implants there is the possibility of loosening over a long period of time. Surface modification is a good way to counter this problem. A thin tantalum oxide layer obtained by layer-by-layer (LBL) sol-gel deposition on top of a titanium surface is expected to improve biocorrosion resistance in the body fluid, biocompatibility, and radio-opacity. This elaboration step is followed by a modification of the tantalum oxide surface with an organodiphosphonic acid self-assembled monolayer, capable of chemically binding to the oxide surface, and also improving hydroxyapatite growth. The different steps of this proposed process are characterized by surfaces techniques like contact angle, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：497 / 503

页数：7

共 32 条

[1] Synthesis and characterization of NiO-Ta2O5 nanocomposite electrode for electrochromic devices [J].