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首页> 外文期刊>Nanobiotechnology, IET >Impartation of hydroxyapatite formation ability to ultra-high molecular weight polyethylene by deposition of apatite nuclei
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Impartation of hydroxyapatite formation ability to ultra-high molecular weight polyethylene by deposition of apatite nuclei

机译：磷灰石核沉积施加超高分子量聚乙烯的羟基磷灰石形成能力

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摘要

The authors aimed to impart hydroxyapatite formation ability to ultra-high molecular weight polyethylene (UHMWPE) by deposition of apatite nuclei (ApN) by the following two methods. The first method was electrophoretic deposition (EPD). A porous UHMWPE was placed between electrodes in the ApN-dispersed ethanol and constant voltage was applied. By this treatment, the ApN were migrated from anode-side surface to the cathode one through the pores by an electric field in the pores of the UHMWPE and deposited inside the pores. The second method was direct precipitation (DP) of the ApN. A porous UHMWPE was soaked in a simulated body fluid (1.0SBF) with higher pH than the physiological one and subsequently, its temperature was raised. By this treatment, the ApN were precipitated in the pores of the UHMWPE directly in the reaction solution. For both methods, the ApN-deposited UHMWPE showed HAp formation ability not only on the top surface but also inside the pores near the surface of the porous UHMWPE in 1.0SBF although the adhesion strength of thus-formed HAp layer was higher in the case of the EPD in comparison with the DP, oxygen plasma treatment before the DP enabled to achieve a similar level of the HAp layer adhesion to the EPD.
机译：作者旨在通过以下两种方法通过沉积磷灰石核（APN）来赋予超高分子量聚乙烯（UHMWPE）的羟基磷灰石形成能力。第一种方法是电泳沉积（EPD）。将多孔UHMWPE置于APN分散的乙醇中的电极之间，并施加恒定电压。通过这种处理，通过UHMWPE的孔中的电场通过孔从阳极侧表面迁移到阴极上的APN并沉积在孔内。第二种方法是APN的直接沉淀（DP）。将多孔UHMWPE浸泡在模拟体液（1.0SBF）中，较高的pH值比生理学液体较高，随后，升高了其温度。通过该处理，将APN直接在反应溶液中沉淀在UHMWPE的孔中。对于这两种方法，APN沉积的UHMWPE不仅显示出在顶表面上的HAP形成能力，而且在1.0SBF中的多孔UHMWPE表面附近的孔隙附近，尽管如此形成的HAP层的粘合强度在EPD与DP相比，DP之前的氧等离子体处理能够实现与EPD相似的HAP层粘附水平。

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