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Journal of Dispersion Science and Technology Volume 41, 2020 - Issue 8
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Articles

An environmentally friendly and cost-effective method to fabricate superhydrophobic PU sponge for oil/water separation

Jichao Zhang Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China; ORCID Iconhttp://orcid.org/0000-0002-5969-353X
ORCID Icon,
Xin Liu Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China; Correspondence[email protected]
,
Faze Chen Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University , Tianjin, China
,
Jiyu Liu Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China; ORCID Iconhttp://orcid.org/0000-0003-3313-5721
ORCID Icon,
Yang Chen Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China;
,
Fan Zhang Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China;
&
Naiqiao Guan Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology , Dalian, China;
show all
Pages 1136-1144 | Received 02 Jan 2019, Accepted 28 Apr 2019, Published online: 21 May 2019
 
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Abstract

Polyurethane (PU) sponge with extreme wettability have been studied widely for oil/water separation. However, existing techniques to fabricate the PU sponge with extreme wettability often involve using the harmful and toxic chemicals with the complex fabrication processes. Here, a facile, environmentally friendly and cost-effective method is proposed to fabricate superhydrophobic-superoleophilic cement-coated PU sponge for oil/water separation. Due to rich porous structures and good elasticity, superhydrophobic sponge exhibited high adsorption capacity for various oils/organic solvents. The separation ability was less affected by complex conditions, including UV lamp irradiation, turbulent environment and continuous separation with vacuum pump assistance. Separation efficiency of oils/corrosive aqueous solutions mixtures could reach up to 99%, which suggested that this superhydrophobic cement-coated PU sponge could be a promising candidate for oil spill cleanup on the sea.

Graphical Abstract

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