文献类型：期刊文献

英文题名：Dynamic Poly(dimethylsiloxane) Brush Coating Shows Even Better Antiscaling Capability than the Low-Surface-Energy Fluorocarbon Counterpart

作者：Chen, Yuxin[1,2];Yu, Xiaodong[1,2];Chen, Liwei[1,2];Liu, Shilin[1,2];Xu, Xiaofei[3,4];Zhao, Shuangliang[2,5,6];Huang, Shilin[1,2];Tian, Xuelin[1,2]

机构：[1]Sun Yat Sen Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510006, Peoples R China;[2]Sun Yat Sen Univ, Guangzhou Key Lab Flexible Elect Mat & Wearable D, Key Lab Polymer Composite & Funct Mat, Minist Educ, Guangzhou 510006, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[5]Guangxi Univ, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China;[6]Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China

年份：2021

卷号：55

期号：13

起止页码：8839

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20212910648304);WOS:【SCI-EXPANDED(收录号:WOS:000671872100038)】；

基金：This work was supported by the National Natural Science Foundation of China (21872176, 21805315, 22072185, and 12072381), the Pe a r l River Talents Program (2017GC010671), and the Natural Science Foundation of Guangdong Province (2018A030310062 and 2019A1515012030).

语种：英文

外文关键词：dynamic liquid-like surface; antiscaling; polymer brushes; surface energy; heterogeneous nucleation

摘要：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 perfluoroalkylsi-lane 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.