期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 33, 页码 18566-18573出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b04980
关键词
thiol-ene chemistiy; superhydrophobic; superoleophilic; oil/water separation; spray-coating; UV-curing; silica nanoparticles
资金
- [DMR-1304214]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1304214] Funding Source: National Science Foundation
A highly efficient mesh for oil/water separation was fabricated by using a superhydrophobic and superoleophilic coating of thiol-ene hybrid, consisting of pentaerythritol tetra(3-mercaptopropionate) (PETMP), 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane (TMTVSi), and hydrophobic fumed silica nanoparticles, via a simple two-step fabrication process. Spray deposition and UV curing photo-polymerization were sequentially performed, during which solvent evaporation provides microscale roughness while nanoparticle aggregation forms nanoscale roughness. The hierarchical morphologies were stabilized after UV curing photopolymerization. High contact angle (>150 degrees) and low roll-off angle (<5 degrees) were achieved due to the multiscale roughness structure of the hierarchical morphologies. These coatings also have excellent chemical resistance, as well as temperature and pH stability, after curing.
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