Abstract Based on the adhesion mechanism of polydopamine, the mussel-inspired hydrogel was prepared on the surface of the Ti6Al4V (Ti) with polydopamine (PDA), polyvinyl alcohol (PVA), hydroxyapatite (HA) and polyacrylic acid (PAA) as raw materials in this study, and the Ti-hydrogel artificial cartilage material was constructed. The hydrogel exhibited a tensile strength of 11.76 MPa, an elongation of 988.76%, and a creep deformation of only 0.035 mm under a 20 N load. The friction coefficient of the Ti6Al4V-hydrogel (Ti-hydrogel) artificial cartilage material decreased and the friction performance was improved. After the substrate was modified by the PDA, the bonding strength of the substrate to the hydrogel up to 6.64 MPa. Therefore, the mussel-inspired hydrogel is an ideal high-strength biomimetic cartilage material.

中文翻译：

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高强度低摩擦Ti6Al4V水凝胶人工软骨材料的仿贻贝结构

摘要 基于聚多巴胺的黏附机理，以聚多巴胺（PDA）、聚乙烯醇（PVA）、羟基磷灰石（HA）和聚丙烯酸（PAA）为原料，在 Ti6Al4V（Ti）表面制备了仿贻贝水凝胶。本研究构建了钛水凝胶人工软骨材料。该水凝胶的拉伸强度为 11.76 MPa，伸长率为 988.76%，在 20 N 载荷下蠕变变形仅为 0.035 mm。Ti6Al4V-水凝胶（Ti-hydrogel）人造软骨材料的摩擦系数降低，摩擦性能得到改善。基材经PDA修饰后，基材与水凝胶的结合强度高达6.64 MPa。因此，受贻贝启发的水凝胶是一种理想的高强度仿生软骨材料。