Amphiphilicly-Modified Self-Stratified Siloxane-Glycidyl Carbamate Coatings for Anti-Icing Application

Amphiphilic siloxane-glycidyl carbamate coatings (AmpSiGC) coatings with surface properties of interest were prepared via combinations of polydimethylsiloxane (PDMS) and poly(ethylene glycol) (PEG). The designed experiment considered several factors: molecular weight of surface-modifying polymers and amounts of PDMS and PEG in a system. Although amphiphilic coatings have demonstrated promising results as marine technologies, investigations on their icephobic applications has been limited. This talk will discuss three aspects of the developed AmpSiGC systems: 1) Preparation of incorporated ingredients and their characterization by Fourier transform infrared spectroscopy (FTIR) and epoxy titration; 2) Surface characterization of coatings via ATR (attenuated total reflectance)-FTIR, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM); and 3) Ice-adhesion, electrochemical impedance spectroscopy, and mechanical property evaluation. Overall, the surface analyses indicated presence of both hydrophobic and hydrophilic domains and most of the coatings demonstrated promising performance for anti-icing applications with desirable barrier and mechanical properties in comparison to controls.

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