Wear-Resistant Ultrahigh-Molecular-Weight Polyethylene-Based Nano- and Microcomposites for Implants

<table>Dependence of surface roughness of wear track (Ra) of specimens under tests: pure UHMWPE (1), <svg height="12.5375" id="M14" style="vertical-align:-0.13792pt" version="1.1" viewbox="0 0 27.3375 12.5375" width="27.3375" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 8.75px; " x="0" y="0">+</tspan>
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</svg>implanted UHMWPE with dozes: 0.5 (2), 1 (3), <svg height="14.2" id="M15" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 46.549999 14.2" width="46.549999" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.2)">
<g transform="translate(72,-60.64)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="9.0271664" y="0">⋅</tspan>
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</svg> (4); nanocomposites: UHMWPE +0.5 wt.% HA without surface treatment (5) and implanted with dozes 0.5 (6), 1 (7),  <svg height="14.2" id="M16" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 76.362503 14.2" width="76.362503" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.2)">
<g transform="translate(72,-60.64)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
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</svg>(8); microcomposites: UHMWPE +20 wt.% HA without ion implantation (9) and implanted with dozes 0.5 (10), 1 (11), <svg height="14.2" id="M17" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 76.362503 14.2" width="76.362503" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.2)">
<g transform="translate(72,-60.64)">
<text transform="matrix(1,0,0,-1,-71.95,60.86)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
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</svg>(12) at the steady-state wearing stage.</table>

Journal of Nanotechnology

fig5

Figure 5

Figure 5: Wear-Resistant Ultrahigh-Molecular-Weight Polyethylene-Based Nano- and Microcomposites for Implants 