Superhydrophilic Polymer Brushes with High Durability and Anti-fogging Activity,ACS Applied Polymer Materials

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Superhydrophilic Polymer Brushes with High Durability and Anti-fogging Activity
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2021-09-21 , DOI: 10.1021/acsapm.1c01090
Michele Fromel ₁ , Devon M. Sweeder ₂ , Seokhoon Jang ₁ , Teague A. Williams ₃ , Seong H. Kim _{1,

3} , Christian W. Pester _{1,

2,

4}

Affiliation

Hydrophilic surface coatings have made it into commercial application as possible solutions for problems such as fogging, frosting, and biofouling. However, there is an inherent contradiction: superhydrophilic coatings can prevent these unwanted phenomena, but they are also readily dissolved by water. To address this longevity concern, the present work introduces a fully aqueous surface-initiated (SI) polymerization under ambient conditions for the facile formation of durable superhydrophilic polymer coatings. The aqueous SI photoinduced electron transfer reversible addition–fragmentation chain transfer polymerization (SI-PET-RAFT) approach developed herein uses water as a sole solvent and can be performed in an ambient air atmosphere. This circumvents traditional shortcomings in SI radical polymerization related to limited hydrophilic monomer solubility in organic solvents and oxygen tolerance. In addition, polymerization under mild yellow light eliminates possible substrate degradation that can occur with conventional thermal or UV-light treatment. The cationic, anionic, and zwitterionic polymer films engineered in this study show promise as functional materials with enhanced durability, demonstrated to effectively combat the challenge of surface fogging. The described approach is user-friendly, cost- and time-efficient, and scalable and produces efficient anti-fogging coatings that outperform commercial solutions in both optical quality and durability.

中文翻译：

具有高耐久性和防雾活性的超亲水聚合物刷

亲水性表面涂层已作为解决雾化、结霜和生物污垢等问题的可能解决方案进入商业应用。然而，存在一个固有的矛盾：超亲水涂层可以防止这些不需要的现象，但它们也很容易被水溶解。为了解决这种长寿问题，本工作引入了一种在环境条件下的全水性表面引发 (SI) 聚合，以轻松形成耐用的超亲水聚合物涂层。本文开发的水性 SI 光致电子转移可逆加成-断裂链转移聚合 (SI-PET-RAFT) 方法使用水作为唯一溶剂，并且可以在环境空气中进行。这避免了 SI 自由基聚合中与有限的亲水单体在有机溶剂中的溶解度和氧耐受性相关的传统缺点。此外，在温和的黄光下聚合消除了传统热处理或紫外线处理可能发生的基材降解。本研究中设计的阳离子、阴离子和两性离子聚合物薄膜显示出作为具有增强耐用性的功能材料的前景，证明可以有效应对表面雾化的挑战。所描述的方法是用户友好的、成本和时间高效的、可扩展的，并生产出高效的防雾涂层，在光学质量和耐用性方面都优于商业解决方案。在温和的黄光下聚合可消除传统热处理或紫外线处理可能发生的基材降解。本研究中设计的阳离子、阴离子和两性离子聚合物薄膜显示出作为具有增强耐用性的功能材料的前景，证明可以有效应对表面雾化的挑战。所描述的方法是用户友好的、成本和时间高效的、可扩展的，并生产出高效的防雾涂层，在光学质量和耐用性方面都优于商业解决方案。在温和的黄光下聚合可消除传统热处理或紫外线处理可能发生的基材降解。本研究中设计的阳离子、阴离子和两性离子聚合物薄膜显示出作为具有增强耐用性的功能材料的前景，证明可以有效应对表面雾化的挑战。所描述的方法是用户友好的、成本和时间高效的、可扩展的，并生产出高效的防雾涂层，在光学质量和耐用性方面都优于商业解决方案。

更新日期：2021-10-08

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