A Robust Polyionized Hydrogel with an Unprecedented Underwater Anti-Crude-Oil-Adhesion Property

A polyionized hydrogel polymer (sodium polyacrylate‐grafted poly(vinylidene fluoride) (PAAS‐g‐PVDF)) is fabricated via an alkaline‐induced phase‐inversion process. PAAS‐g‐PVDF coatings exhibit unprecedented anti‐adhesion and self‐cleaning properties to crude oils under an aqueous environment. A PAAS...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2016-07, Vol.28 (26), p.5307-5314
Main Authors: Gao, Shoujian, Sun, Jichao, Liu, Pingping, Zhang, Feng, Zhang, Wenbin, Yuan, Shiling, Li, Jingye, Jin, Jian
Format: Article
Language:English
Subjects:
anti-heavy-oil-adhesion
Aqueous environments
Coatings
Crude oil
Flux
Gravitation
Hydrogels
polyionized hydrogels
Rejection
Sodium
superwetting materials
ultrafast separation
viscous oil/water separation
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Summary:A polyionized hydrogel polymer (sodium polyacrylate‐grafted poly(vinylidene fluoride) (PAAS‐g‐PVDF)) is fabricated via an alkaline‐induced phase‐inversion process. PAAS‐g‐PVDF coatings exhibit unprecedented anti‐adhesion and self‐cleaning properties to crude oils under an aqueous environment. A PAAS‐g‐PVDF‐coated copper mesh can effectively separate a crude oil/water mixture with extremely high flux and high oil rejection driven by gravity, and is oil‐fouling‐free for long‐term use.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201600417