کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1460317 989604 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced hydrophilicity and in vitro bioactivity of porous TiO2 film through the incorporation of boron
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Enhanced hydrophilicity and in vitro bioactivity of porous TiO2 film through the incorporation of boron
چکیده انگلیسی

The aim of the current work is to prepare a novel boron-incorporated TiO2 film (B-TiO2 film) through MAO process in order to take advantages of the MAO technique and benefits of boron (B). The physicochemical properties and the in vitro bioactivity of B-TiO2 film are investigated in comparison with those of the control group without B (TiO2 film). Compared with TiO2 film, B-TiO2 film does not show obvious differences on morphology, surface roughness and phase composition. However, B-TiO2 film is found to be more hydrophilic than TiO2 film as the water contact angle decreases significantly from 77±1.7° to 65±3.1°. In simulated body fluid (SBF), an enhanced apatite-forming ability of B-TiO2 film is noticed compared to TiO2 film, indicating that the incorporation of B can improve the bioactivity of MAO-fabricated film. A possible mechanism is proposed to explain the enhanced bioactivity of B-TiO2 film. B is presented in MAO-fabricated film in forms of B2O3 and Ca2B2O5·H2O. Ca2B2O5·H2O is able to partially hydrolise in SBF and transform to boranol (B-OH) groups. The enhanced bioactivity might be attributed to the B-OH groups formed on the surface of B-TiO2 film in SBF. Results of the study suggest that B-TiO2 film is of great promise to be applied as bioactive material for biomedical applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 41, Issue 3, Part B, April 2015, Pages 4452–4459
نویسندگان
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