Biobased Coatings Based on Eugenol Derivatives.

Area of Science:

• Materials Science
• Organic Chemistry
• Polymer Science

Background:

• Urushiol, a natural coating material, possesses valuable properties but is derived from plants that can cause allergic reactions.
• Developing plant-based alternatives with tunable properties is crucial for sustainable material development.

Purpose of the Study:

• To synthesize novel urushiol analogues from eugenol for plant-based coatings.
• To evaluate the physical, chemical, and mechanical properties of the fabricated coatings.
• To explore the potential for creating multifunctional and high-performance sustainable coatings.

Main Methods:

• Synthesis of urushiol analogues from eugenol via a three-step route involving thiol-ene and silylation/desilylation reactions.
• Fabrication of uniform thin films using spin-coating with iron(II) acetate.
• Characterization of film properties including adhesion, mechanical strength, hydrophobicity, and antioxidant activity.

Main Results:

• Successfully synthesized urushiol analogues from eugenol.
• Fabricated uniform thin films with properties comparable to urushiol films.
• Achieved superior adhesion, mechanical strength, and antioxidant properties compared to natural urushiol.
• Demonstrated increased hydrophobicity and Young's modulus with longer alkyl chain lengths.

Conclusions:

• Eugenol-derived urushiol analogues offer a promising route to sustainable, high-performance coatings.
• The developed method allows for the introduction of various functional units, enabling multifunctional material design.
• These plant-based coatings represent an environmentally friendly alternative to traditional materials.