Fabricating superhydrophobic surfaces via coating amine-containing fluorinated emulsion and Michael addition reaction

IF 2.3 4区材料科学 Q2 Chemistry

Journal of Coatings Technology and Research Pub Date : 2022-03-11 DOI:10.1007/s11998-021-00600-y

Jiajia Yuan, Xue Yin, Zelin Qiu, Yujie Shen, Lifeng Fang, Zhiying Liang, Qingran Kong, Baoku Zhu

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引用次数: 5

Abstract

In this work, highly fluorinated acrylate emulsions with reliable stability emulsified by protonated octadecylamine were successfully synthesized. With appropriate protonation, the obtained emulsion showed high monomer conversions up to 90.2% and ultralow surface energy. The ultralow-surface-energy coatings were fabricated via surface enrichment of abundant fluorine and replacing hydrophilic amino groups with hydrophobic groups through the Michael addition reaction. Superhydrophobic and self-cleaning surfaces were prepared on porous substrates through dip coating. When fabricated on porous glass fiber nonwoven mats, surfaces coated with enriching fluorinated side chains and few hydrophilic groups showed remarkable superhydrophobicity with a water contact angle more than 150º and a low sliding contact angle of 4.7°. The usage of fluorinated emulsions was sharply reduced due to the addition of perfluorinated acrylate. Moreover, the Michael acceptors were alternative such as perfluorinaed acrylates, long aliphatic acrylates and crosslinking acrylates, displaying superior hydrophobicity and waterproof properties. All the results conclusively indicated that this practical modified method was promising for potential applications of hydrophobic modifications.

Graphical abstract

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用涂覆含胺氟乳剂和Michael加成反应制备超疏水表面

本文成功地合成了高氟丙烯酸酯乳液，并以质子化十八乙胺为乳化剂，具有可靠的稳定性。通过适当的质子化反应，得到的乳液单体转化率高达90.2%，表面能极低。通过Michael加成反应将亲水性氨基替换为疏水性氨基，并在表面富集富氟，制备了超低表面能涂层。采用浸渍法在多孔基底上制备了超疏水自清洁表面。在多孔玻璃纤维非织造垫上制备时，表面涂覆富氟侧链和少量亲水基团，表现出显著的超疏水性，水接触角大于150º，滑动接触角较低，仅为4.7°。由于添加了全氟丙烯酸酯，氟化乳剂的使用量急剧减少。此外，迈克尔受体是替代的，如全氟丙烯酸酯、长脂肪族丙烯酸酯和交联丙烯酸酯，表现出优异的疏水性和防水性能。结果表明，这种实用的改性方法具有潜在的疏水改性应用前景。图形抽象

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来源期刊

Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

4.40

自引率

8.70%

发文量

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.