Colloid and Polymer Science ( IF 2.2 ) Pub Date : 2021-07-31 , DOI: 10.1007/s00396-021-04870-1 Fatma Bayram 1 , Emine Sevgili Mercan 1 , Mustafa Karaman 1, 2
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In this study, poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) thin films were deposited on stainless steel meshes by initiated chemical vapor deposition (iCVD) method to prepare superhydrophobic-superoleophilic membranes for oil–water separation. FTIR and XPS analyses showed high retention of the fluorine moieties, which are responsible for the superhydrophobic property of the as-deposited films. The measured water contact angle (WCA) values were observed to be dependent on the mesh size and the coating thickness. The maximum WCA value of the stainless steel mesh after iCVD was measured as 166.9°, while oil contact angle value being nearly zero. Hence, iCVD of PPFDA on mesh surfaces created composite structures which were water-repellent but oil-permeable. iCVD-coated meshes were directly used for oil–water separation without using an extra force or chemical reagent. A high separation efficiency value of 98.5% was observed, the value of which was dependent on the mesh size and coating thickness.
Graphical abstract
中文翻译：
引发化学气相沉积法一步制备超疏水-超亲油膜用于油水分离
在这项研究中，聚（1H，1H，2H，2H-全氟癸基丙烯酸酯）（PPFDA）薄膜通过起始化学气相沉积（iCVD）方法沉积在不锈钢网上，以制备用于油水分离的超疏水-超亲油膜。FTIR 和 XPS 分析显示氟部分的高保留率，这是造成沉积膜超疏水性的原因。观察到测量的水接触角 (WCA) 值取决于网孔尺寸和涂层厚度。iCVD后不锈钢网的最大WCA值为166.9°，而油接触角值几乎为零。因此，网状表面上的 PPFDA 的 iCVD 产生了防水但透油的复合结构。iCVD 涂层网片直接用于油水分离，无需使用额外的力或化学试剂。观察到 98.5% 的高分离效率值，该值取决于筛孔尺寸和涂层厚度。
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