2020
DOI: 10.1016/j.matt.2019.12.017
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Bioinspired Multifunctional Anti-icing Hydrogel

Abstract: Biological anti-freeze proteins (AFPs) with superior anti-freezing performance offer a great example of perfectly integrating multiple anti-icing functions, by combining hydrogen-bonding and hydrophobic groups to effectively regulate interfacial water. Inspired by AFPs, a multifunctional anti-icing material based on PDMS-grafted polyelectrolyte hydrogel was created.

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Cited by 157 publications
(109 citation statements)
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“…Third, the solvent can be changed from pure water to a mixture of water and organic liquids, such as propylene or ethylene glycol, to form hybrid organo‐hydrogels with much larger working temperature ranges 18‐20 . Fourth, the anti‐freezing property can be realized through nano‐confinement of water molecules 21‐24 . But the anti‐freezing performance by nano‐confinement is not comparable with the first three strategies.…”
Section: Introductionmentioning
confidence: 99%
“…Third, the solvent can be changed from pure water to a mixture of water and organic liquids, such as propylene or ethylene glycol, to form hybrid organo‐hydrogels with much larger working temperature ranges 18‐20 . Fourth, the anti‐freezing property can be realized through nano‐confinement of water molecules 21‐24 . But the anti‐freezing performance by nano‐confinement is not comparable with the first three strategies.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, it is much more desirable to design passive anti-icing surfaces via lowering freezing temperature or reducing ice adhesion, with the benefit of reducing energy consumption [8]. Recently, several strategies have been proposed to depress the freezing temperature, such as ion-infused surfaces [14,15], charged surfaces [16], photothermal surfaces [17], etc. Meanwhile, Wang and co-workers found that water molecules can interact tightly with hydrophilic polymers, making the water in the hydrogel coating remain liquid in subzero environments, a quality which can be utilized to reduce the ice adhesion.…”
Section: Introductionmentioning
confidence: 99%
“…The elastic modulus of the hydrogel layer was determined previously to be E ≈ 30 kPa , [ 48 ] value which is two orders of magnitude lower than the pristine Tygon substrate ( E ≈ 6 MPa). The presence of the water‐containing hydrogel layer decreased the coefficient of friction (COF) of the surface, [ 50–53 ] tested here using a rheometer with a steel parallel plate geometry, as described previously. [ 47,48 ] We characterized the COF of both pristine and coated flat surfaces with continuous shearing with a normal force of 1 N up to 60 min, as shown in Figure a.…”
Section: Figurementioning
confidence: 99%