ACS Appl Mater Interfaces. 2015 Aug 26;7(33):18566-73. doi: 10.1021/acsami.5b04980. Epub 2015 Aug 12.

Inorganic-Organic Thiol-ene Coated Mesh for Oil/Water Separation.

ACS applied materials & interfaces

Qiyi Chen, Al de Leon, Rigoberto C Advincula

PMID: 26236915 DOI: 10.1021/acsami.5b04980

Abstract

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 photopolymerization 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°) and low roll-off angle (<5°) 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.

Keywords: UV-curing; oil/water separation; silica nanoparticles; spray-coating; superhydrophobic; superoleophilic; thiol−ene chemistry

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't