Transparent and Scratch-Resistant Antifogging Coatings with Rapid Self-Healing Capability

ACS Applied Materials & Interfaces
Bang LiangZhaohui Su

Abstract

Typical antifogging coatings based on hydrophilic polymers are soft and susceptible to mechanical damage. In this paper, an antifogging coating that is both scratch-resistant and self-healing is fabricated by copolymerizing sulfobetaine methacrylate and 2-hydroxyethyl methacrylate in the presence of sulfobetaine-modified silica nanoparticles in one pot. The coating is highly efficient in preventing fog formation at the surface and reducing ice adhesion, and is resistant to fouling by oil and protein, due to the strong hydration ability of the zwitterionic moieties. The composite coating is resistant to scratching and abrasion under normal use conditions to maintain its transparency due to increased hardness by the filled silica nanoparticles and is able to heal completely within several minutes severe scratches and cuts inflicted in harsh conditions, owing to the water-assisted reversibility of the electrostatic and hydrogen-bonding interactions holding together the polymer components and the silica nanoparticles. The multiple desirable properties demonstrated and the simple fabrication process of the coating offers great potential in many practical applications.

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Citations

Jul 14, 2020·Advanced Materials·Jongsun YoonHyomin Lee
Sep 19, 2020·Advances in Colloid and Interface Science·Zixu Huang, Hadi Ghasemi
Jun 5, 2021·ACS Applied Materials & Interfaces·Wanshun DengQunji Xue
Nov 5, 2020·ACS Applied Materials & Interfaces·Tao Xie, Bryan D Vogt

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