Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland.
Faculty of Foundry Engineering, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland.
Int J Mol Sci. 2022 Mar 17;23(6):3244. doi: 10.3390/ijms23063244.
In this work, sulfonated polyetheretherketone (S-PEEK)-based coatings, nanocrystalline ZnS and hydroxyapatite (n-HA) particles were developed on Zr-2.5Nb zirconium alloy substrates by electrophoretic deposition (EPD) combined with subsequent heat treatment. The properties of suspensions and deposition kinetics were studied. Cationic chitosan polyelectrolyte ensured the stabilization of the suspension and allowed for the co-deposition of all coating components on the cathode. The heating of the coated samples at a temperature of 450 °C and slow cooling resulted in sulfonation of the PEEK and the formation of dense coatings. The coatings were characterized by high roughness, hardness, modulus of elasticity and adhesion strength. The coatings revealed mild hydrophilicity, improved the electrochemical corrosion resistance of the alloy and induced the formation of hydroxyapatite with a cauliflower-like morphology on its surface during the Kokubo test. This work explored the great development potential of advanced sulfonated PEEK-based coatings, incorporating antibacterial and bioactive components by EPD combined with heat treatment to stimulate the surface properties of zirconium alloy for prospective dental and orthopedic applications. The antibacterial and osteoconductive properties of the obtained coatings should be further investigated.
在这项工作中，通过电泳沉积（EPD）结合随后的热处理，在 Zr-2.5Nb 锆合金基底上开发了基于磺化聚醚醚酮（S-PEEK）的涂层、纳米晶 ZnS 和羟基磷灰石（n-HA）颗粒。研究了悬浮液的性质和沉积动力学。阳离子壳聚糖聚电解质确保了悬浮液的稳定性，并允许所有涂层成分在阴极上共同沉积。将涂覆的样品在 450°C 的温度下加热并缓慢冷却导致 PEEK 磺化并形成致密的涂层。涂层具有高粗糙度、硬度、弹性模量和附着力。涂层表现出轻微的亲水性，提高了合金的电化学腐蚀性，并在 Kokubo 测试中诱导其表面形成具有菜花状形貌的羟基磷灰石。这项工作探索了通过 EPD 结合热处理来开发先进的磺化 PEEK 基涂层的巨大发展潜力，该方法可以整合抗菌和生物活性成分，以刺激锆合金的表面性能，用于有前途的牙科和矫形应用。还应进一步研究获得的涂层的抗菌和骨传导性能。
