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Journal of Shanghai University >

2018 , Vol. 24 >Issue 1: 44 - 55

DOI: https://doi.org/10.12066/j.issn.1007-2861.1921

Research Articles

Fabrication and biological properties of micro/nano hybrid structured TiO2 coatings

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  • 1. School of Materials Science and Engineering,Shanghai University, Shanghai 200444, China
    2. Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received date: 2017-03-29

  Online published: 2018-03-05

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Abstract

Micro/nano hybrid structured surface can improve their capability of encouraging early cell responses and rapid bone in-growth. The micro/nano hybrid structured TiO$_{2}$ coatings were prepared by induction suspension plasma spraying (ISPS) using anatase TiO$_{2}$ suspension as a feedstock. Their osteogenesis related cell behaviors were studied. Scanning transmission electron microscopy (SEM) results show that the coatings prepared by adjusting feed rate have typical micro/nano hybrid structures. Porosity of the coating increases with the increase of feed rate. The X-ray diffraction (XRD) results show that the coating is mainly composed of rutile with a small amount of anatase, and the content of rutile decreased with the increase of feed rate. This may be related to the high temperature process of plasma spraying, in which the anatase phase is transformed into a more stable rutile phase. The results of in vitro cell compatibility tests show that the micro/nano structured TiO$_{2}$ coatings prepared with ISPS has higher protein adsorption, better osteoblasts spreading and higher expression of alkaline phosphatase (ALP) activity and mineralization than atmospheric plasma sprayed coatings and polished titanium surfaces.

Key words： nano titania; induction suspension plasma spraying; micro/nano hybrid structure; cell compatibility

Cite this article

GU Jingping, XIE Youtao, HUANG Liping, HE Yanchang, ZHAO Jun, ZHENG Xuebin, LI Hong, SUN Jinliang . Fabrication and biological properties of micro/nano hybrid structured TiO2 coatings[J]. Journal of Shanghai University, 2018 , 24(1) : 44 -55 . DOI: 10.12066/j.issn.1007-2861.1921

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