Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

Abstract

Ice build-up on solid surfaces causes significant economic losses for a range of industries. One solution to this problem is the development of coatings with low ice adhesion strength. Amphiphilic poly(ionic liquid) (PIL)-based surfaces have been recently reported for antifogging/antifrosting applications. However, they have possible anti-icing properties through lowering the ice adhesion strength that have yet to be reported. Herein, we designed well-defined triblock copolymers composed of a polydimethylsiloxane component coupled with PIL segments of poly ([2 (methacryloyloxy)ethyl] trimethylammonium chloride) (PMETAC), which were subsequently UV-cured with an oligo-(ethylene glycol) dimethacrylate (OEGDMA) cross-linker. The structure−property relationships of the resultant semi-interpenetrating polymer networks (SIPNs) were investigated by varying the counterion (i.e., trimethylammonium bis-(trifluoromethanesulfonyl)imide (TFSI − )) and the content of the PIL segments and cross-linker. An ice adhesion strength as low as 13.3 ± 8.6 kPa was observed for the coating containing 12.5 wt % of PMETAC segment and 5 wt % of OEGDMA, which is one of the lowest values reported so far for the amphiphilic coatings. Characterization of the coatings in terms of surface features, wettability, and hydration states have enabled the elucidation of different deicing mechanisms. Self-lubrication due to the existence of nonfreezable bound water led to the obtained low ice adhesion strength. This work offers a new approach for the exploration of PILbased icephobic coatings for practical applications.

A crosslinked silicone coating adjusted by an additive with promising antifouling and ice nucleation inhibition performance

“…Comparative analysis indicated that the B-PDMS coating exhibited a significantly lower ice adhesion strength than most reported values in the literature, underscoring its ability to delay the icing process. [55][56][57][58]…”

Facile and Eco-Friendly Approach to Multifunctional Supramolecular Poly(ionic liquid) Nanoporous Membranes Containing Hydrophilic Anions (Br–, MBry–, M = Sn, Pb, Sb, Bi)

“…Polyelectrolyte porous membranes (PPMs) are of scientific and technological interest because the synergistic pore-confinement effects and charges enable diverse applications in nanoelectronics, smart actuators, (wet)-adhesives, , adsorption/separation, , functional coatings, , and sensing and optical technologies. − It is well known, however, that well-established industrial methods for the fabrication of neutral porous polymer membranes (such as nonsolvent-induced phase separation and thermally induced phase separation) are not useful for preparing PPMs due to the water solubility and intrinsic ionic character of traditional polyelectrolytes . In this context, decades of intensive research efforts have been devoted to developing reliable methods for preparing PPMs.…”

Facile Fabrication of Robust Superhydrophobic Ice Shedding Coating with Superior Corrosion Resistance and Temperature Durability

“…Inspired by the natural pitcher plant, the lubricated surface has unique characteristics in water repellency and anti-icing/ice-shedding properties. , A lubricating layer is formed on the surface of this coating that isolates water from the solid surface. This results in icing delay and low ice adhesion strength (τ ice ). , However, the durability is severely restricted by lubricant depletion and surface damage.…”