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Transparent and Scratch-Resistant Antifogging Coatings with Rapid Self-Healing Capability
Bang Liang1,2, Zhenxing Zhong1,2, Erna Jia1,2
1State Key Laboratory of Polymer Physics and Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China.
ACS Applied Materials & Interfaces
|August 7, 2019
Summary
This study presents a novel, durable antifogging coating. The advanced material is scratch-resistant, self-healing, and prevents fogging and ice adhesion, offering broad application potential.
Area of Science:
- Materials Science
- Surface Chemistry
- Polymer Science
Background:
- Traditional antifogging coatings often lack durability and are prone to mechanical damage.
- Hydrophilic polymers commonly used in antifogging applications exhibit poor scratch resistance.
Purpose of the Study:
- To develop a novel antifogging coating with enhanced scratch resistance and self-healing capabilities.
- To investigate the properties of a composite coating incorporating zwitterionic moieties and silica nanoparticles.
Main Methods:
- Fabrication of a composite coating via one-pot copolymerization of sulfobetaine methacrylate and 2-hydroxyethyl methacrylate.
- Incorporation of sulfobetaine-modified silica nanoparticles to enhance mechanical properties.
- Evaluation of antifogging, anti-icing, anti-fouling, scratch resistance, and self-healing properties.
Main Results:
- The developed coating exhibits efficient antifogging and reduced ice adhesion due to the hydration of zwitterionic groups.
- The composite coating demonstrates significant scratch and abrasion resistance, maintaining transparency.
- Complete self-healing of severe scratches and cuts was achieved within minutes, facilitated by water-assisted interactions.
Conclusions:
- The novel composite coating offers a unique combination of antifogging, anti-icing, anti-fouling, scratch resistance, and self-healing properties.
- The simple fabrication process and desirable characteristics present significant potential for diverse practical applications.
- This research advances the development of high-performance functional surface coatings.
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