Innovating Lubrication with Polyelectrolyte Hydrogels: Sustained Performance Through Lipid Dynamics

IF 5.1 Q1 POLYMER SCIENCE

ACS Macro Letters Pub Date : 2024-09-24 DOI:10.1002/adfm.202413712

Zhongrui Wang, Panpan Li, Benyou Li, Shenghao Yang, Ting Zhao, Yuwen Meng, Qiang Li, Jingcheng Hao, Xu Wang

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引用次数: 0

Abstract

The lubrication process of natural joint cartilage involves a series of coordinated mechanisms, a key aspect of which is its ability to continuously extract lubricating components from synovial fluid to achieve sustained lubrication. Inspired by this natural phenomenon, this study reports a novel polyelectrolyte hydrogel, specifically integrating ε-poly-L-lysine (ε-PL), adeptly captures lipids from environment to achieve effective lubrication similar to human joints. The ε-PL within the hydrogel facilitates the dynamic sequestration of lipids, fostering interfacial self-assembly. This setup, enriched with highly hydrated lipid head groups, enhances boundary lubrication capabilities for extended performance. Through rigorous evaluation of friction coefficients and supramolecular interactions between the hydrogel and lipids, it identified hydrogen bonding, charge-dipole, and hydrophobic interactions as key to this self-assembly. The findings affirm the versatility of polyelectrolytes in synthesizing lubricating hydrogels, bridging the gap to the creation of biomimetic hydrogels that mimic natural lubrication with enhanced durability and efficiency.

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利用聚电解质水凝胶创新润滑技术：通过脂质动力学实现持续性能

天然关节软骨的润滑过程涉及一系列协调机制，其中一个关键方面是软骨能够不断从滑液中提取润滑成分，以实现持续润滑。受这一自然现象的启发，本研究报告了一种新型聚电解质水凝胶，特别是整合了ε-聚-L-赖氨酸（ε-PL）的水凝胶，能从环境中捕捉脂质，实现类似人体关节的有效润滑。水凝胶中的ε-PL 有助于动态封闭脂质，促进界面自组装。这种富含高水合脂质头基的设置增强了边界润滑能力，从而延长了性能。通过严格评估水凝胶与脂质之间的摩擦系数和超分子相互作用，研究人员确定氢键、电荷偶极子和疏水相互作用是这种自组装的关键。研究结果肯定了聚电解质在合成润滑水凝胶方面的多功能性，为创造生物仿生水凝胶架起了桥梁，这种水凝胶可模拟天然润滑，并具有更高的耐用性和效率。

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来源期刊

ACS Macro Letters 化学-

CiteScore

10.40

自引率

3.40%

发文量

209

审稿时长

1 months

期刊介绍： ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.