Toward the Replacement of Long-Chain Perfluoroalkyl Compounds: Perfluoropolyether-Based Low Surface Energy Grafted Nanocoatings
Toward the Replacement of Long-Chain Perfluoroalkyl Compounds: Perfluoropolyether-Based Low Surface Energy Grafted Nanocoatings
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DOI：
10.1021/acsapm.1c01438
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发表时间：
2022-01-18
影响因子：
5
通讯作者：
Luzinov，Igor
中科院分区：
文献类型：
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作者：
Caliskan，Tugba Demir;Hukum，Kubra Ozkan;Luzinov，Igor
我们描述了一种直接的方法来制备基于全氟聚醚(PFPE)的纳米涂层，显著减少了油和水在涂层表面的扩散。在制备过程中，使用了聚甲基丙烯酸缩水甘油酯(PGMA)作为锚固层，在PFPE附着之前沉积在硅表面。然后将全氟聚醚基聚酯酸(PFPE-COOH)接枝到PGMA表面，以降低其表面能，从而降低其润湿性。接枝表面的十六烷接触角为40~46°，水接触角为80~98°。表面的润湿性强烈地依赖于接枝层的厚度，其中较厚的PFPE层的接枝导致较低的油和水的润湿性。我们预计，全氟乙烯基接枝纳米涂层的使用将消除长全氟烷基的健康和环境问题，这种长全氟烷基通常用于获得减少油和水扩散的表面。
We describe a straightforward approach to fabricating perfluoropolyether (PFPE)-based nanocoatings, significantly decreasing the spreading of oil and water on coated surfaces. In the fabrication, polyglycidyl methacrylate (PGMA) is used as an anchoring layer deposited on the silicon surface before PFPE attachment. Perfluoropolyether-based polyester acid (PFPE-COOH) is then grafted to the PGMA surface to reduce its surface energy and, consequently, wettability. The grafted surface demonstrates a hexadecane contact angle of 40–46° and a water contact angle of 80–98°. The surface’s wettability strongly depends on the grafted layer thickness, where grafting of the thicker PFPE layers results in lower oil and water wettability. We expect that the employment of PFPE-based grafted nanocoatings will eliminate the health and environmental concerns of long perfluoroalkyls, which are typically used to obtain surfaces with decreased spreading of oil and water.