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Icephobic Performance of One-step Silicone-oil-infused Slippery Coatings: Effects of Surface Energy, Oil and Nanoparticle Contents

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Item embargoed until 2021-09-30. Restrictions imposed by the publisher
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final draft
Date
2019
Author(s)
Cui, Wenjuan
Pakkanen, Tapani A
Unique identifier
10.1016/j.jcis.2019.09.119
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Citation
Cui, Wenjuan. Pakkanen, Tapani A. (2019). Icephobic Performance of One-step Silicone-oil-infused Slippery Coatings: Effects of Surface Energy, Oil and Nanoparticle Contents.  Journal of colloid and interface science, 558, 251-258. 10.1016/j.jcis.2019.09.119.
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© Elsevier Inc.
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CC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/
Abstract

Hypothesis
State-of-the-art superhydrophobic surfaces (SHSs) usually do not function in high humidity and frosty climate conditions. Lubricant-infused slippery surfaces (LISSs) with a homogeneous and ultraslippery surface are expected to be a reliable icephobic technique. Hence, the fabrication of simple and scalable bioinspired LISSs is important for practical applications.

Experiments
Durable one-step LISSs consisting of silicone oil and polymer mixtures were fabricated. A grid map based on added oil and silica nanoparticles was developed to tune wettability, morphology, and slippery behavior of surfaces. A similar framework for ice adhesion of lubricant-infused coatings was also presented for the design of optimal icephobic materials.

Findings
LISSs with slight hydrophobicity yield slippery properties, resulting in an order of magnitude lower ice adhesion compared to SHSs. The stable 20-w% silicone-oil-infused slippery coating with slight hydrophobicity and silica nanoparticles was found to be effective in anti-icing. The nanoparticles firmly anchor the oil overlayer and eliminate contamination by drying the surface. The LISSs made of polymers with surface energy ranging from 29 to 31 mJ/m2 show the potential to achieve low ice adhesion. As a result, the use of systematic frameworks highlights the role of material parameters. One-production strategy can be broadly used to design icephobic materials.

Subjects
lubricant-infused coating   one-step fabrication   silicone oil content   nanoparticle content   ice adhesion   freezing point   surface energy   
URI
https://erepo.uef.fi/handle/123456789/7788
Link to the original item
http://dx.doi.org/10.1016/j.jcis.2019.09.119
Publisher
Elsevier BV
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  • Luonnontieteiden ja metsätieteiden tiedekunta [1144]
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