Liu Xiaoyan, Claesson Per M
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China.
Division of Surface and Corrosion Science, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
Polymers (Basel). 2022 Jul 3;14(13):2724. doi: 10.3390/polym14132724.
An extremely efficient lubrication system is achieved in synovial joints by means of bio-lubricants and sophisticated nanostructured surfaces that work together. Molecular bottlebrush structures play crucial roles for this superior tribosystem. For example, lubricin is an important bio-lubricant, and aggrecan associated with hyaluronan is important for the mechanical response of cartilage. Inspired by nature, synthetic bottlebrush polymers have been developed and excellent aqueous boundary lubrication has been achieved. In this review, we summarize recent experimental investigations of the interfacial lubrication properties of surfaces coated with bottlebrush bio-lubricants and bioinspired bottlebrush polymers. We also discuss recent advances in understanding intermolecular synergy in aqueous lubrication including natural and synthetic polymers. Finally, opportunities and challenges in developing efficient aqueous boundary lubrication systems are outlined.
通过生物润滑剂和协同作用的复杂纳米结构表面，在滑膜关节中实现了极其高效的润滑系统。分子刷状结构对这种卓越的摩擦系统起着关键作用。例如，润滑素是一种重要的生物润滑剂，与透明质酸相关的聚集蛋白聚糖对软骨的力学响应很重要。受自然启发，已开发出合成刷状聚合物并实现了优异的水基边界润滑。在本综述中，我们总结了近期对涂覆有刷状生物润滑剂和仿生刷状聚合物的表面的界面润滑性能的实验研究。我们还讨论了在理解包括天然和合成聚合物在内的水基润滑中的分子间协同作用方面的最新进展。最后，概述了开发高效水基边界润滑系统的机遇和挑战。
