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Intrinsically Self-Healing Polymers: From Mechanistic Insight to Current Challenges
Bingrui Li1,2, Peng-Fei Cao3, Tomonori Saito2
1The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, Tennessee37996, United States.
Chemical Reviews
|December 28, 2022
Summary
Intrinsically self-healing polymers utilize dynamic bonds for enhanced sustainability and longevity. Combining different bond types offers improved toughness and faster self-healing rates, guiding future material design.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Self-healing materials offer sustainable solutions by extending product lifespans.
- Polymers with dynamic covalent and noncovalent bonds are key to intrinsic self-healing.
Purpose of the Study:
- To provide an overview of recent developments in intrinsically self-healing polymers.
- To discuss self-healing mechanisms, bond types, and design principles.
Main Methods:
- Review of literature on intrinsically self-healing polymers.
- Analysis of different dynamic bond types (hydrogen bonds, covalent bonds).
- Examination of combined dynamic bond systems.
Main Results:
- Materials combining different dynamic bonds show high toughness and fast self-healing.
- A trade-off exists between self-healing rate and mechanical modulus.
- Design principles are proposed to overcome this trade-off.
Conclusions:
- Intrinsically self-healing polymers offer significant potential for advanced technologies.
- Further research is needed to address current challenges in material design and application.
