<i>π</i>–<i>π</i> Conjugated Bonds Stacking/Scattering for Switchable Lubrication in Supramolecular Hydrogel

Existing polymer materials often lack the ability to dynamically adjust lubrication in response to external stimuli. This gap in adaptable lubrication technology limits their application in advanced systems such as intelligent motion devices and soft robotics. To address this challenge, a dual-responsive lubricating hydrogel is introduced designed with a thermal and shear-responsive supramolecular network integrated into a stable polymer framework. The hydrogel exhibits a partial gel-sol transition under thermal or shear stress, mimicking the mucus secretion behavior of hagfish. As a result, the hydrogel's surface secretes a liquid supramolecular layer that significantly alters its coefficient of friction (COF), achieving up to a 20-fold reduction in friction due to the reversible supramolecular transition. This hydrogel demonstrates significant potential as an intelligent lubrication material capable of dynamically responding to varying stimuli, paving the way for more adaptive and efficient lubrication technologies.

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Publication Details

Journal
Advanced Science
Published
2025-03-05
DOI
https://doi.org/10.1002/advs.202500447
Citations
12
Primary Topic
Adhesion, Friction, and Surface Interactions
Type
article
Field-Weighted Citation Impact
10.36

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article

π–π Conjugated Bonds Stacking/Scattering for Switchable Lubrication in Supramolecular Hydrogel

Xuezhong Zhang, Guilong Yan, Shijia He, Jingjuan Lai et al.
12 citations
Advanced Science
Adhesion, Friction, and Surface Interactions
10.36
article

π–π Conjugated Bonds Stacking/Scattering for Switchable Lubrication in Supramolecular Hydrogel

Xuezhong Zhang, Guilong Yan, Shijia He, Jingjuan Lai, Dong Xiang, Yuanpeng Wu, Li Han, Xungai Wang, Shuhang Deng, Zhenyu Li, Li Wang, Jingyu Chen, Hui Li, Chunxia Zhao, Dong Li
article en
12 citations

Abstract

Existing polymer materials often lack the ability to dynamically adjust lubrication in response to external stimuli. This gap in adaptable lubrication technology limits their application in advanced systems such as intelligent motion devices and soft robotics. To address this challenge, a dual-responsive lubricating hydrogel is introduced designed with a thermal and shear-responsive supramolecular network integrated into a stable polymer framework. The hydrogel exhibits a partial gel-sol transition under thermal or shear stress, mimicking the mucus secretion behavior of hagfish. As a result, the hydrogel's surface secretes a liquid supramolecular layer that significantly alters its coefficient of friction (COF), achieving up to a 20-fold reduction in friction due to the reversible supramolecular transition. This hydrogel demonstrates significant potential as an intelligent lubrication material capable of dynamically responding to varying stimuli, paving the way for more adaptive and efficient lubrication technologies.

Advanced ScienceVol. 12(16)
Hong Kong Polytechnic University (HK), Southwest Petroleum University (CN), State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (CN)
National Natural Science Foundation of China, Southwest Petroleum University, Department of Science and Technology of Sichuan Province
Affordable and clean energy
Openalex Percentile: Top 1%
Adhesion, Friction, and Surface Interactions
10.36
DOIOpen Access PDFOpenAlex
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