Related Experiment Video
Updated: Apr 13, 2026
10:22
Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
Published on: November 30, 2020
3.4K
A lignin/castor oil-based polyamide autonomous self-healing composite materials
Mang Wu1, Baozhong Cui1, Huaizhi Liu2
1Key Laboratory of Micro-Nano Powder and Advanced Energy Materials of Anhui Higher Education Instituts, School of Materials and Environmental Engineering, Chizhou University, Chizhou 247000, China.
International Journal of Biological Macromolecules
|February 19, 2025
Summary
This study introduces a low-cost, bio-based self-healing elastomer by incorporating lignin into castor oil-based polyamide (PBUDA). The resulting material exhibits enhanced toughness and mechanical strength, alongside autonomous self-healing capabilities at room temperature.
Area of Science:
- Materials Science
- Polymer Chemistry
- Sustainable Materials
Background:
- Developing bio-based self-healing elastomers with high toughness and low cost is challenging.
- Lignin, a renewable resource, offers potential for material enhancement.
- Castor oil-based polyamide (PBUDA) serves as a promising base material.
Purpose of the Study:
- To create a cost-effective, bio-based self-healing elastomer.
- To enhance the mechanical properties and self-healing ability of PBUDA using lignin.
- To explore lignin valorization for advanced material applications.
Main Methods:
- Incorporation of lignin into castor oil-based polyamide (PBUDA) via a solution method.
- Characterization of the phase separation structure and mechanical properties of the blends.
- Evaluation of the autonomous self-healing performance at room temperature.
Main Results:
- Uniform dispersion of lignin in PBUDA formed a phase separation structure.
- Mechanical strength increased fivefold (22.7 MPa) with 40% lignin addition.
- Toughness and Young's modulus increased by four and fourteen times, respectively.
- Excellent room-temperature self-healing ability was achieved due to dynamic hydrogen bonds and low glass transition temperature (Tg).
Conclusions:
- Lignin incorporation significantly enhances mechanical properties and toughness of PBUDA.
- The PBUDA-lignin blends demonstrate effective autonomous self-healing at room temperature.
- This research offers a sustainable pathway for lignin valorization and advances self-healing castor oil-based polyamides.
