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High-strength lignin-based polyurethane with multilayer integrated structure: A flexible protective layer for
Tingxuan Duan1, Bo Liu1, Xin-Yue Lou1
1School of Chemical Engineering, Polymeric and Soft Materials Laboratory, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, PR China.
Journal of Colloid and Interface Science
|July 16, 2026
Summary
A new multifunctional material integrates protection, sensing, and energy supply for outdoor robots. This smart material uses lignin-based polyurethane, conductive gel, and MXene for enhanced performance and wearable sensing applications.
Area of Science:
- Materials Science
- Robotics Engineering
- Wearable Technology
Background:
- Single-function materials limit outdoor robotic systems.
- Need for integrated protection, sensing, and energy supply in robotics.
Purpose of the Study:
- Develop a sandwich-structured multifunctional intelligent material for outdoor robots.
- Enhance material properties for integrated functions and wearable sensing.
Main Methods:
- Fabricated a layered material with lignin-based polyurethane (LPU), acrylic-based eutectic gel, and MXene.
- Incorporated acylsemicarbazide (ASC)-derived hydrogen-bond arrays into LPU for improved mechanical and self-healing properties.
- Utilized MXene for photothermal energy supply and infrared stealth.
Main Results:
- LPU achieved enhanced tensile strength (81 MPa), self-healing, and recyclability.
- Conductive gel enabled precise monitoring of human motion.
- MXene layer generated 0.3 V under light irradiation, providing photothermal energy and IR stealth.
Conclusions:
- The integrated material overcomes limitations of single-function materials in robotics.
- Demonstrated a novel approach for lightweight, multifunctional wearable sensing devices.
