Highly Stable Amphiphilic Organogel with Exceptional Anti-icing Performance

Yang, Yu Shih; Jin, Biyu; Jamil, Muhammad Imran; Cheng, Dang-guo; Zhang, Qinghua; Zhan, Xiaoli; Chen, Fengqiu

doi:10.1021/acsami.8b20352

Cited by 100 publications

(62 citation statements)

References 51 publications

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“…[6][7][8] Novel micro-and nano-fabrication techniques (such as lithography, chemical etching, reactive ion etching and plasma oxidation) allow the design of a wide variety of engineered features on pristine solid surfaces, including random porous network, 9 regular individual deep pores, 10 nano-flowers, 11 nano-pins, 12 nano-wires, 13 honeycomb-based geometries, 14 pillar-onpore-like geometries, 15 and so forth. By infusing lubricant-based liquids within the microand/or nano-structures, liquid-infused surfaces (LISs) 16,17 or slippery liquid-infused porous surfaces (SLIPSs) 18,19 are fabricated with distinct characteristics, such as UV-responsiveness guided pathways, 20 efficient dropwise condensation, 21 fog and water harvesting, 22 anti-icing and anti-frost, 23,24 as well as self-cleaning, 25 etc. However, the stability of lubricants on the SLIPSs/LISs needs further attention.…”

Section: Introductionmentioning

confidence: 99%

Phase-Change Slippery Liquid-Infused Porous Surfaces with Thermo-Responsive Wetting and Shedding States

Gulfam

Orejon

Choi

et al. 2020

ACS Appl. Mater. Interfaces

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Slippery liquid-infused porous surfaces (SLIPSs) prepared with phase invariant materials (e.g., Krytox GPL oil) have been increasingly researched as low adhesion engineered functional surfaces in the last decade. However, phase change materials (PCMs) have been scarcely adopted, although they are potential candidates due to their inherent lubricant characteristics as well as temperature-dependent phases empowering unique thermoresponsive switchable wettability. Here, paraffin wax (an organic PCM) has been applied on hydrophobized nanoporous copper substrate to realize the phase-change SLIPSs (PC-SLIPSs) fabricated via spin-coating followed by thermal annealing, which overcomes earlier limitations encountered on the PC-SLIPSs. Advantages of these PC-SLIPSs are: the prompting of a low adhesion Wenzel (LAW) state opposed to earlier completely-pinned Wenzel state in the solid phase, and the optimized slippery state without excess of PCM in the liquid phase. Further, in order to characterize the intimate interactions between liquid droplets and the different phases of the PC-SLIPSs, i.e., solid, mush, and liquid phases, the contact line dynamics have been comprehensively investigated, unveiling the water droplet adhesion and depinning phenomenon as the function of thermo-responsive wetting states.Lastly, the PC-SLIPSs have also been tested for water vapor condensation, demonstrating the feasibility of dropwise condensation and the shift of droplet size distribution in both the solid and liquid phases. The results suggest that such engineered surfaces have great potential to prompt and tune dropwise condensation via thermo-responsive switchable wettability for heat transfer and water harvesting applications.

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Section: Introductionmentioning

confidence: 99%

Phase-Change Slippery Liquid-Infused Porous Surfaces with Thermo-Responsive Wetting and Shedding States

Gulfam

Orejon

Choi

et al. 2020

ACS Appl. Mater. Interfaces

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“…The fabrication strategy of the coatings, incorporating hydrophilic pendant groups in soft polymer for aqueous lubricating layer, was thus widely employed in similar studies. [ 39 , 47 , 106 , 115 , 116 , 117 , 118 , 119 , 120 ] Despite the great progresses made on programing QLL at interface for assisting ice removal, ice adhesion strength on these surfaces (≈20 kPa) are still beyond the super low ice adhesion threshold (10 kPa) required for ice self‐removal by its own gravitational force. Further development of surfaces with nonfrozen interfacial water layer will need to target lower ice adhesion strength.…”

Section: Dynamic Interfacesmentioning

confidence: 99%

Dynamic Anti‐Icing Surfaces (DAIS)

et al. 2021

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Remarkable progress has been made in surface icephobicity in the recent years. The mainstream standpoint of the reported antiicing surfaces yet only considers the ice-substrate interface and its adjacent regions being of static nature. In reality, the local structures and the overall properties of ice-substrate interfaces evolve with time, temperature and various external stimuli. Understanding the dynamic properties of the icing interface is crucial for shedding new light on the design of new anti-icing surfaces to meet challenges of harsh conditions including extremely low temperature and/or long working time. This article surveys the state-of-the-art anti-icing surfaces and dissects their dynamic changes of the chemical/physical states at icing interface. According to the focused critical ice-substrate contacting locations, namely the most important ice-substrate interface and the adjacent regions in the substrate and in the ice, the available anti-icing surfaces are for the first time re-assessed by taking the dynamic evolution into account. Subsequently, the recent works in the preparation of dynamic anti-icing surfaces (DAIS) that consider time-evolving properties, with their potentials in practical applications, and the challenges confronted are summarized and discussed, aiming for providing a thorough review of the promising concept of DAIS for guiding the future icephobic materials designs.

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“…Yu et al fabricated an amphiphilic organogels (AmOG-2) which is infiltrated with amphiphilic lubricant PEO-PDMS-PEO (M w = 9200, PEO (poly(ethylene oxide))/PDMS (poly(dimethylsiloxane)) = 15.0%) (AmO-2). [47] When exposed to water, the hydrophilic segments of the amphiphilic lubricant combines with water molecules through hydrogen bond to form nonfreezable bond water. This decreases the freezing point of water and delays the formation of ice crystals on the surface.…”

Section: Reducing Ice Adhesion By Liquid Lubricantsmentioning

confidence: 99%

Designing Anti‐Icing Surfaces by Controlling Ice Formation

Zhou

Sun

Liu

2021

Adv Materials Inter

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or could exhibit easy de-icing process is an extremely meaningful issue to be considered. [1d,4] Though various anti-icing and de-icing strategies have been widely developed, the conventional positive de-icing methods are usually inefficient, high waste and cost, or environmentally unfriendly. [5] To fundamentally and effectively address the problem of superficial icing, understanding and controlling the icing process on the surfaces will facilitate the design of anti-icing surfaces. [1c,d,4,6] Ice forms on solid surfaces mainly through four routes: freezing of supercooled sessile droplets, [7] freezing of impacting supercooled water droplets, [8] frosting, [9] and ice deposition (Scheme 1). [10] In winter, when the supercooled drops impact on a surface, freezing happens in short time as the surface temperature is subzero. The freezing of supercooled water or vapor on solid surfaces usually experiences steps of reversible formation of ice nuclei, [4a,11] irreversible growth of ice crystal, [12] and ice recrystallization. [13] Besides freezing from water or vapor, ice sometimes deposits directly on the solid surface by snowfall.Efforts have been made to understand the mechanism of ice formation, and various anti-icing and de-icing strategies have been developed with respect to the different routes of ice formation (Scheme 1). For sessile droplet freezing, surfaces with specific charges, [7c,14] ions, [15] or wetting properties, [7b,16] etc., have been applied to inhibit or delay ice nucleation. The freezing of impacting droplet can be solved by employing liquid-repellent surface to inhibit droplet attachment and reducing contact time before bouncing. [17] Frost formation process occurs when water condensation or water vapor desublimation happens on the surface. It can be, respectively, hindered by the timely removal of the condensate droplets due to their high mobility on superhydrophobic surfaces or local icing by spatially controlling the nucleation and the growth modes of ice crystals on surfaces. [9b,12c,18] If ice is inevitably deposited on the surface, the introduction of a aqueous or organic lubricant layer on the surface can effectively reduce its adhesion. [4b,19] In this review, we briefly summarize the current progress of studies on the regulation of the heterogenous ice nucleation and growth, respectively. Then we correspondingly summarize the anti-icing strategies with respect to the different routes of ice formation. Finally, we discuss the remaining gaps in the field of anti-icing and outlooks for development.Understanding the formation of ice from supercooled water on a surface is a matter of fundamental importance and general use. Kinetics of ice nucleation and ice growth on solid surfaces are actively studied, based on which effective anti-icing surfaces are designed. This review introduces one major breakthrough of experimental estimation of the critical ice nucleus size in heterogenous ice nucleation (HIN). Besides that, targeted anti-icing strategies are summarized according to th...

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Highly Stable Amphiphilic Organogel with Exceptional Anti-icing Performance

Cited by 100 publications

References 51 publications

Phase-Change Slippery Liquid-Infused Porous Surfaces with Thermo-Responsive Wetting and Shedding States

Phase-Change Slippery Liquid-Infused Porous Surfaces with Thermo-Responsive Wetting and Shedding States

Dynamic Anti‐Icing Surfaces (DAIS)

Designing Anti‐Icing Surfaces by Controlling Ice Formation

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