Environmentally Responsive Hydrogels and Composites Containing Hydrogels as Water-Based Lubricants.
Song Chen1,2, Zumin Wu3,4,5, Lei Wei1,2
1College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
Gels (Basel, Switzerland)
|July 25, 2025
Summary
Environmentally responsive hydrogels offer advanced lubrication for biosystems and engineering. These smart materials overcome limitations like low strength, enabling stable performance in dynamic conditions.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Tribology
Background:
- Hydrogels are promising water-based lubricants due to hydrophilicity and biocompatibility.
- Applications span biosystems (e.g., in vivo) and engineering (e.g., soft robots).
- Challenges include low mechanical strength and sensitivity to environmental changes (pH, temperature, etc.).
Purpose of the Study:
- To review recent advancements in environmentally responsive hydrogels for lubrication.
- To explore strategies for enhancing hydrogel lubrication performance under dynamic conditions.
- To examine composite materials utilizing hydrogels as lubricants in demanding engineering applications.
Main Methods:
- Review of physical, structural, and chemical modification strategies for hydrogels.
- Incorporation of smart functional groups for responsive mechanisms.
- Analysis of composite friction materials with hydrogel lubricants.
Main Results:
- Responsive hydrogels demonstrate tunable lubrication properties in varied environments.
- Physical and chemical modifications improve mechanical strength and stability.
- Composite materials show potential for high-performance lubrication in engineering systems.
Conclusions:
- Environmentally responsive hydrogels are advanced lubricating materials for diverse applications.
- Tailored modifications enable hydrogels to withstand challenging dynamic conditions.
- Hydrogel-based composites offer robust solutions for demanding lubrication needs, including marine applications.
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