Scholarlink

<p>In artificial joint applications, high-density polyethylene (HDPE) has significant obstacles, such as poor interfacial adhesion and inadequate antibacterial properties. To create a strong adhesive transition layer, this study used ultraviolet (UV) light-induced radical activation of the HDPE surface to accomplish fast grafting and chemical bonding of polydopamine (PDA). Furthermore, a poly(vinyl alcohol) (PVA)/hydroxyapatite (HA)/poly(acrylic acid) (PAA) composite hydrogel coating was constructed. The experiments indicated that the strategy increased the hydrophilicity of the HDPE surface and the strength of interfacial bonding. At the same time, it effectively suppressed interfacial failure and improved deformation and creep resistance. In addition, the coating exhibited a significantly reduced friction coefficient of 0.017, representing an 82.53% decrease compared to HDPE. Furthermore, the wear rate decreased by 45.92% to 11.54 × 10<sup>–6</sup>&#xa0;mm<sup>3</sup>&#xa0;(N&#xa0;m)<sup>−1</sup>, demonstrating excellent wear resistance in both water-lubricated and biomimetic lubrication environments. It also demonstrated strong antibacterial properties. The study offers a feasible approach to improve the interface stability, long-term wear resistance, and antibacterial properties of artificial joint materials, which could advance the clinical application of HDPE in the field of artificial joints.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced wear resistance and antibacterial performance of HDPE via UV-induced polydopamine grafting and multifunctional hydrogel coating

  • 期刊论文

  • 发表日期：

    2026年3月10日

查看全文
  • Sisi Liu,
  • Yijia Li,
  • Chunrong Liu,
  • Jingang Liu

摘要

In artificial joint applications, high-density polyethylene (HDPE) has significant obstacles, such as poor interfacial adhesion and inadequate antibacterial properties. To create a strong adhesive transition layer, this study used ultraviolet (UV) light-induced radical activation of the HDPE surface to accomplish fast grafting and chemical bonding of polydopamine (PDA). Furthermore, a poly(vinyl alcohol) (PVA)/hydroxyapatite (HA)/poly(acrylic acid) (PAA) composite hydrogel coating was constructed. The experiments indicated that the strategy increased the hydrophilicity of the HDPE surface and the strength of interfacial bonding. At the same time, it effectively suppressed interfacial failure and improved deformation and creep resistance. In addition, the coating exhibited a significantly reduced friction coefficient of 0.017, representing an 82.53% decrease compared to HDPE. Furthermore, the wear rate decreased by 45.92% to 11.54 × 10–6 mm3 (N m)−1, demonstrating excellent wear resistance in both water-lubricated and biomimetic lubrication environments. It also demonstrated strong antibacterial properties. The study offers a feasible approach to improve the interface stability, long-term wear resistance, and antibacterial properties of artificial joint materials, which could advance the clinical application of HDPE in the field of artificial joints.