In-Situ Observation of Ice-Adhesion Interface Under Tangential Loading: Anti-Icing Mechanism of Hydrophilic PPEGMA Polymer Brush

IF 2.9 3区工程技术 Q2 ENGINEERING, CHEMICAL Tribology Letters Pub Date : 2024-07-26 DOI:10.1007/s11249-024-01886-w

Hikaru Okubo, Kento Hase, Ken Tamamoto, Yoshinobu Tsujii, Ken Nakano

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Abstract

Techniques preventing icing and ice accumulation on surfaces are required to solve snow- and ice-induced accidents and disasters. Recently, hydrophilic polymers have attracted attention as a passive anti-icing method. This study examined the ice-adhesion properties of the hydrophilic poly[poly(ethylene glycol) methyl ether methacrylate] (PPEGMA) concentrated polymer brush (CPB). A custom-built apparatus was developed to obtain the ice-adhesion strength and visualize the dynamics of the ice-adhesion interface under tangential loading. The ice-adhesion interface for a PPEGMA-CPB-coated glass substrate was investigated by comparing it with the bare glass substrate. As a result, the CPB exhibited a low ice-adhesion strength of less than 100 kPa, the dependencies of which on the drive speed and temperature indicate a high-viscous liquid-like layer at the interface, even below the melting point of water, leading to the smooth onset of sliding due to its self-lubricity without any rupture events (including precursory events) observed for the bare glass.

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切向加载下冰-粘附界面的原位观测：亲水性 PPEGMA 聚合物刷的抗冰机制

要解决冰雪引发的事故和灾难，就必须采用防止表面结冰和积冰的技术。最近，亲水性聚合物作为一种被动防冰方法引起了人们的关注。本研究考察了亲水性聚[聚（乙二醇）甲基醚甲基丙烯酸酯]（PPEGMA）浓缩聚合物刷（CPB）的附冰性能。为了获得冰粘附强度并观察切向加载下冰粘附界面的动态变化，开发了一种定制仪器。通过与裸玻璃基底进行比较，研究了涂有 PPEGMA-CPB 的玻璃基底的冰粘界面。结果表明，CPB 的冰粘强度较低，小于 100 kPa，其与驱动速度和温度的相关性表明，在界面上有一个高粘度液态层，甚至低于水的熔点，由于其自润滑特性，滑动开始时非常平稳，没有发生裸玻璃上观察到的任何破裂事件（包括前兆事件）。

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来源期刊

Tribology Letters 工程技术-工程：化工

CiteScore

5.30

自引率

9.40%

发文量

116

审稿时长

2.5 months

期刊介绍： Tribology Letters is devoted to the development of the science of tribology and its applications, particularly focusing on publishing high-quality papers at the forefront of tribological science and that address the fundamentals of friction, lubrication, wear, or adhesion. The journal facilitates communication and exchange of seminal ideas among thousands of practitioners who are engaged worldwide in the pursuit of tribology-based science and technology.