One-step Condensation/copolymerization of VTES and DVB for Self-assembly Bionic Superhydrophobic Surface Coating and Study on Oil-water Separation

• 作者: Ruilong Zhang Zhiping Zhou Yi Wang Xiaohui Dai Li Chen Jiangdong Dai
• 来源期刊: 仿生工程学报（英文版）
• 年，卷（期）: 2021,（3）
• 页码范围: 559-573
• 页数: 15页
• 语种: 英文
• DOI: 10.1007/s42235-021-0044-9

摘要

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 condensa-tion/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.