Dynamic Poly(dimethylsiloxane) Brush Coating Shows Even Better Antiscaling Capability than the Low-Surface-Energy Fluorocarbon Counterpart,Environmental Science & Technology

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Dynamic Poly(dimethylsiloxane) Brush Coating Shows Even Better Antiscaling Capability than the Low-Surface-Energy Fluorocarbon Counterpart
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-06-17 , DOI: 10.1021/acs.est.1c01850
Yuxin Chen _{1,

2} , Xiaodong Yu _{1,

2} , Liwei Chen _{1,

2} , Shilin Liu _{1,

2} , Xiaofei Xu ₃ , Shuangliang Zhao _{3,

4} , Shilin Huang _{1,

2} , Xuelin Tian _{1,

2}

Affiliation

Scale formation is a significant problem in a wide range of industries, including water treatment, food processing, power plants, and oilfield production. While surface modification provides a promising methodology to address this challenge, it has generally been believed that surface coatings with the lowest surface energy, such as fluorocarbon coatings, are most suitable for antiscaling applications. In contrast to this general knowledge, here we show that a liquid-like coating featuring highly mobile linear poly(dimethylsiloxane) (LPDMS) brush chains can bring an even better antiscaling performance than conventional perfluoroalkylsilane coatings, despite the fact that the former has much higher surface energy than the latter. We demonstrate that the LPDMS brush coating can more effectively inhibit heterogeneous nucleation of scale on a substrate compared with common perfluoroalkylsilane or alkylsilane coatings, and the dynamic liquid-like characteristic of the LPDMS brush coating is speculated to be responsible for its excellent nucleation inhibiting ability by reducing the affinity and effective interface interaction between the substrate and the scale nucleus. Our findings reveal the great prospect of using liquid-like coating to replace environmentally hazardous fluorine-containing organic ones as a green and cost-effective solution to address the scale problem with enhanced antiscaling performance.

中文翻译：

动态聚（二甲基硅氧烷）刷涂层显示出比低表面能碳氟化合物更好的防垢能力

在水处理、食品加工、发电厂和油田生产等众多行业中，水垢形成是一个重大问题。虽然表面改性为解决这一挑战提供了一种很有前景的方法，但人们普遍认为，具有最低表面能的表面涂层，如氟碳涂层，最适合防垢应用。与这些常识相反，我们在这里展示了具有高流动性线性聚（二甲基硅氧烷）（LPDMS）刷链的类液体涂层可以带来比传统全氟烷基硅烷涂层更好的防垢性能，尽管前者具有更高的阻垢性能。表面能高于后者。我们证明，与普通的全氟烷基硅烷或烷基硅烷涂层相比，LPDMS 刷涂层可以更有效地抑制基材上水垢的异质成核，并且推测 LPDMS 刷涂层的动态液体状特性是其优异的成核抑制能力的原因降低基质和鳞核之间的亲和力和有效的界面相互作用。我们的研究结果揭示了使用类液体涂料代替对环境有害的含氟有机涂料作为一种绿色且具有成本效益的解决方案来解决结垢问题并增强防垢性能的巨大前景。推测 LPDMS 刷涂层的动态液体状特性是其优异的成核抑制能力的原因，可降低基材与鳞片核之间的亲和力和有效界面相互作用。我们的研究结果揭示了使用类液体涂料代替对环境有害的含氟有机涂料作为一种绿色且具有成本效益的解决方案来解决结垢问题并增强防垢性能的巨大前景。推测 LPDMS 刷涂层的动态液体状特性是其优异的成核抑制能力的原因，可降低基材与鳞片核之间的亲和力和有效界面相互作用。我们的研究结果揭示了使用类液体涂料代替对环境有害的含氟有机涂料作为一种绿色且具有成本效益的解决方案来解决结垢问题并增强防垢性能的巨大前景。

更新日期：2021-07-06

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