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One-step Condensation/copolymerization of VTES and DVB for Self-assembly Bionic Superhydrophobic Surface Coating and Study on Oil-water Separation
Journal of Bionic Engineering ( IF 4.9 ) Pub Date : 2021-06-11 , DOI: 10.1007/s42235-021-0044-9
Ruilong Zhang , Zhiping Zhou , Yi Wang , Xiaohui Dai , Li Chen , Jiangdong Dai

Mimicry of nature drives the development of bionic materials. Bionic superhydrophobic materials are a kind of high-efficiency materials to handle oil spills and water pollution. However, the stability of surface coatings of the superhydrophobic materials remains a challenge. Herein, a new category of self-assembly bionic superhydrophobic surface coating was prepared via one-step condensation/copolymerization of vinyltriethoxysilane (VTES) and divinylbenzene (DVB), which realized the close combination of covalent bonds between organic (e.g. DVB) and inorganic matter (e.g. VTES), and avoided the swelling of polydivinylbenzene (PDVB) in the process of collection of oil from water. This organic-inorganic hybrid polymer could self-assembly deposit on the surface of sponge even other substrates. For example, P(VTES-DVB)-SiO2/MS obtained by assembling P(VTES-DVB)-SiO2 on the surface of Melamine Sponge (MS) exhibited superhydrophobicity with a Water Contact Angle (WCA) of 157.3°, the optimal adsorption capacity of 77 g·g−1 − 136 g·g−1 for diverse oils, and an excellent separation efficiency of 99.3%. Besides, the excellent acid and alkali resistance of P(VTES-DVB)-SiO2/MS suggested the potential value in practical oil-water separation. P(VTES-DVB)-SiO2 showed the outstanding hydrophobic performance by using as coating on different substrates. This work provided a new idea about the stable combination of organic and inorganic matter in the surface modification.



中文翻译:

VTES与DVB一步缩聚/共聚自组装仿生超疏水表面涂层及油水分离研究

对自然的模仿推动了仿生材料的发展。仿生超疏水材料是一种处理石油泄漏和水污染的高效材料。然而,超疏水材料表面涂层的稳定性仍然是一个挑战。在此,通过乙烯基三乙氧基硅烷(VTES)和二乙烯基苯(DVB)一步缩合/共聚制备了一类新型自组装仿生超疏水表面涂层,实现了有机物(DVB)和无机物之间共价键的紧密结合。(例如VTES),避免了聚二乙烯苯(PDVB)在从水中收集油的过程中的溶胀。这种有机无机杂化聚合物可以自组装沉积在海绵甚至其他基材的表面。例如,通过在三聚氰胺海绵 (MS) 表面组装 P(VTES-DVB)-SiO 2获得的P(VTES-DVB)-SiO 2 /MS表现出超疏水性,水接触角 (WCA) 为 157.3°,对多种油类的最佳吸附量为77 g·g -1 − 136 g·g -1,分离效率高达99.3%。此外,P(VTES-DVB)-SiO 2 /MS优异的耐酸碱性表明其在实际油水分离中具有潜在价值。P(VTES-DVB)-SiO 2通过在不同基材上用作涂层显示出优异的疏水性能。该工作为有机物和无机物在表面改性中的稳定结合提供了新思路。

更新日期:2021-06-11
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