journal article·2018-11-11Open access

Toward Superhydrophobic/Superoleophilic Materials for Separation of Oil/Water Mixtures and Water-in-Oil Emulsions Using Phase Inversion Methods

Chih-Feng Wang, Yi-Jung Tsai, Shiao-Wei Kuo, Kuo-Jung Lee, Chien-Chieh Hu, Juin-Yih Lai

Coatings· Volume 8· Issue 11

Abstract

In this study, a method that can simultaneously separate oil/water mixtures and water-in-oil emulsions were developed. Various substrates (synthetic polymers and stainless steel meshes) were coated by rough hydrophobic polymer films. The prepared materials possessed superhydrophobicity and superoleophilicity. These superhydrophobic sponges can isolate extensive amounts of oil from water when connected to a related vacuum framework. Moreover, the superhydrophobic meshes (SHM) can separate both surfactant-free and -stabilized water-in-oil emulsions via gravity with high separation efficiency (oil purity: >99.99%) and flux (up to 4760 L m−2 h−1). The extraordinary performance of our materials and their low-energy, efficient, low-cost preparation propose that they have great potential for real-time applications.
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Research context

OpenAlex topics: Surface Modification and Superhydrophobicity · Fluid Dynamics and Heat Transfer · Fluid Dynamics Simulations and Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan

Department of Materials Science and Engineering, I-Shou University, Kaohsiung 840, Taiwan

Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 804, Taiwan

Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan

R&D Centre for Membrane Technology, Chung Yuan University, Taoyuan 320, Taiwan

Funding

Ministry of Science and Technology, Taiwan

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