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Eugenol-Based High-Strength and Toughness Shape Memory Poly(urethane thioether) Networks as Intrinsic UV-Shielding
Yuhao Zhai1, Dongdong Zhang1, Lilong Gao1
1School of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.
Biomacromolecules
|August 15, 2024
Summary
Researchers developed new biomass-based materials for UV-shielding goggles. These eugenol-based poly(urethane thioether) networks offer excellent UV protection and mechanical properties, potentially safeguarding eyes from harmful ultraviolet radiation.
Area of Science:
- Materials Science
- Polymer Chemistry
- Biomedical Engineering
Background:
- Ultraviolet (UV) radiation presents a significant health risk.
- Effective UV protection, especially for the eyes, is crucial.
- Existing UV-shielding materials may have limitations in performance or composition.
Purpose of the Study:
- To develop a novel biomass-based material for UV-shielding applications.
- To create high-performance poly(urethane thioether) networks using a click chemistry approach.
- To fabricate functional UV-shielding goggles from a single, sustainable material.
Main Methods:
- Synthesis of eugenol-based diurethanes (EDUs).
- Cross-linking EDUs via thiol-ene photoclick chemistry to form networks (EUTNs).
- Characterization of mechanical, optical, and UV-filtering properties of EUTNs.
Main Results:
- EUTNs exhibited high mechanical strength (Young's modulus: 2.6 GPa, tensile strength: 85 MPa) and toughness (fracture elongation: 2066%).
- Materials demonstrated shape memory behavior and good optical transparency.
- EUTN films effectively blocked ~99% of UVB and UVC radiation without UV absorbers.
- Integrated UV goggles with frames and lenses made from EUTN were fabricated.
Conclusions:
- Biomass-derived EUTNs offer a promising solution for advanced UV protection.
- The developed material provides excellent mechanical properties and efficient UV blocking.
- The integrated goggle design showcases the material's versatility and potential for eye safety applications.
