Role of the surface chemistry of plasma-polymer layers on their long-term anti-fogging behavior

Thanh Hien Tran (1) , Dominique Debarnot (1) , José L Ortiz (2) , Fabienne Poncin-Epaillard (1)

1 IMMM - Institut des Molécules et Matériaux du Mans
2 VIS - Valeo Vision [Bobigny]

Long-term anti-fogging capability of plasma-coatings obtained from hydrophilic precursor, such as 2-(dimethylamino)ethyl methacrylate or acrylic acid, and hydrophobic monomer, 1H,1H,2H-perfluoro-1-decene, deposited on polycarbonate is studied for two different aging. These films, when freshly prepared, show simultaneous hydrophilicity / oleophobicity for HDFD concentrations < 50 %. They fulfill anti-fogging criteria: low water contact angle (< 20°), high hexadecane contact angle around 70° and preservation of optical transparency after water vapor contact. Depending on their chemical structure, only p-AA-co-HDFD with 20-40 % of HDFD retain their anti-fogging properties after a thermal aging while all of them are altered when dipped in hot water. p-AA-co-HDFD is more efficient than p-DAME-co-HDFD reducing airborne contamination and improving the long-term anti-fogging performance.

Mots clés: aging; wetting; anti-fogging; plasma co-deposition; hydrophilic / oleophobic

Domaines: Chimie

Thanh Hien Tran, Dominique Debarnot, José L Ortiz, Fabienne Poncin-Epaillard. Role of the surface chemistry of plasma-polymer layers on their long-term anti-fogging behavior. Plasma Processes and Polymers, 2020, 17 (4), pp.1900232. ⟨10.1002/ppap.201900232⟩. ⟨hal-03016773⟩