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Rationally Designed Eugenol-Based Chain Extender for Self-Healing Polyurethane Elastomers
Uk-Jae Lee1,2, Se-Ra Shin3, Heewon Noh1,2
1School of Chemical and Biological Engineering, Seoul National University, Gwanak-ro 1, Gwanak-gu, 08826 Seoul, Republic of Korea.
ACS Omega
|November 8, 2021
Summary
This study introduces bio-based self-healing polyurethane using eugenol glycol dimer (EGD). The novel material exhibits remarkable self-healing and antioxidant properties, offering a sustainable alternative to petroleum-based polyurethanes.
Area of Science:
- Polymer Science
- Materials Science
- Sustainable Chemistry
Background:
- Growing demand for sustainable materials due to petroleum depletion.
- Need for advanced polymers with self-healing and antioxidant functionalities.
- Limitations of conventional petroleum-based polyurethanes.
Purpose of the Study:
- To synthesize and characterize a novel bio-based self-healing polyurethane.
- To utilize eugenol glycol dimer (EGD) as a key polyol component.
- To evaluate the self-healing and antioxidant properties of the synthesized polyurethane.
Main Methods:
- Synthesis of eugenol glycol dimer (EGD) polyol.
- Incorporation of EGD into polyurethane (PU) synthesis using tetramethylene ether glycol and 4,4'-methylene diphenyl diisocyanate.
- Characterization of PU properties, including self-healing efficiency and antioxidant activity (DPPH assay).
Main Results:
- Successfully synthesized and characterized bio-based self-healing PU using EGD.
- Achieved excellent initial self-healing efficiency (99.84%) and retained high efficiency (84.71%) after three cycles.
- Demonstrated significant antioxidant properties attributed to the EGD component.
- Identified transcarbamoylation via pendant hydroxyl groups as the self-healing mechanism.
Conclusions:
- Eugenol-based EGD is a viable polyol for creating high-performance bio-based polyurethanes.
- The synthesized EGD-PU exhibits exceptional self-healing and antioxidant capabilities.
- EGD-PU presents a promising sustainable alternative for applications in self-healable films and coatings.
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