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Cation-π Interaction-Driven Polyurethane Material With Superior Seawater Resistance and Excellent Tribological
Zhibin Feng1,2, Zhangzhang Tang1, Jing Xu1
1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 27, 2026
Summary
Researchers developed a new polyurethane material with enhanced seawater resistance and improved mechanical and tribological properties. This molecular engineering approach offers superior performance in marine environments.
Area of Science:
- Materials Science
- Polymer Chemistry
- Tribology
Background:
- Marine environments with high humidity and salinity accelerate material corrosion and wear.
- Optimizing material properties for marine applications presents significant scientific challenges.
Purpose of the Study:
- To develop a functionalized material system with inherent seawater resistance and excellent tribological properties.
- To address the critical need for advanced materials in marine environments.
Main Methods:
- Incorporation of a cation-π interaction-enhanced mechanism into polyurethane via molecular engineering.
- Formation of hydrogen-bonded nanodomains within the polyurethane network.
- Combination of molecular simulation and experimental analysis.
Main Results:
- The functionalized polyurethane (PUNa) exhibited inherent seawater resistance and superior tribological properties.
- Hydrogen-bonded nanodomains effectively shielded against corrosive attack in seawater.
- The elastomer showed a 1.19 times increase in toughness and a 38% reduction in the coefficient of friction after seawater immersion.
Conclusions:
- The cation-π interaction-enhanced polyurethane demonstrates exceptional adaptability to marine environments.
- Systematic elucidation of mechanisms provides a foundation for deep-sea equipment applications.
- This molecular engineering strategy offers a promising pathway for developing advanced marine materials.
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