Lorenzetti Martina, Luxbacher Thomas, Kobe Spomenka, Novak Saša
Department for Nanostructured Materials, Jožef Stefan Institute, Jamova cesta 39, 1000, Ljubljana, Slovenia,
J Mater Sci Mater Med. 2015 Jun;26(6):191. doi: 10.1007/s10856-015-5521-4. Epub 2015 May 20.
It is known that the "race for the surface" determining the in vivo response is strictly connected to the physico-chemical properties of the material, especially at its surface. Accordingly, the study of surface roughness, charge and wettability is fundamental to predict the bio-response to the implant. In this work, streaming potential was chosen as a reliable method to quantify the solid surface charge of hydrothermally treated (HT) TiO2-anatase nano-crystalline coatings, grown on titanium substrates. The influence of metal and ionic conductance on the zeta potential values was taken into account, allowing for the correlation of the surface charge with the coating porosity, the semiconductor character of the TiO2 nano-crystals and the metallic nature of the bulk titanium.
众所周知，决定体内反应的“表面竞争”与材料的物理化学性质密切相关，尤其是在其表面。因此，研究表面粗糙度、电荷和润湿性对于预测植入物的生物反应至关重要。在这项工作中，选择流动电势作为一种可靠的方法来量化在钛基底上生长的水热（HT）处理的TiO₂-锐钛矿纳米晶涂层的固体表面电荷。考虑了金属和离子电导率对ζ电位值的影响，从而使表面电荷与涂层孔隙率、TiO₂纳米晶体的半导体特性以及块状钛的金属性质相关联。
