Fabrication of durable superhydrophobic/oleophilic cotton fabric for highly efficient oil/water separation

In the present work, dopamine is self-polymerized on cotton fabric by a simple deep-coating method and followed by modification with an ethanolic solution of palmitic acid: a superhydrophobic/oleophilic cotton fabric was obtained. The as-prepared cotton fabric exhibits a superhydrophobic character w...

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Bibliographic Details
Published in:Water science and technology 2021-01, Vol.83 (1), p.90-99
Main Authors: Mohamed, M E, Abd-El-Nabey, B A
Format: Article
Language:English
Subjects:
Absorption
Adhesives
Capacity
Caustic soda
Contact angle
Cotton
Cotton fabrics
Dopamine
Efficiency
Fabrication
Fabrics
Fourier transforms
Hexanes
Hydrophobic and Hydrophilic Interactions
Hydrophobic surfaces
Hydrophobicity
Morphology
n-Hexane
Oil
Palmitic acid
Petroleum
Petroleum ether
Plasma etching
Recyclability
Separation
Silicone resins
Silicones
Sodium
Spectrum analysis
Stability
Textiles
Water
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Summary:In the present work, dopamine is self-polymerized on cotton fabric by a simple deep-coating method and followed by modification with an ethanolic solution of palmitic acid: a superhydrophobic/oleophilic cotton fabric was obtained. The as-prepared cotton fabric exhibits a superhydrophobic character with a water contact angle of 157 . The absorption capacity of as-prepared superhydrophobic/oleophilic cotton fabric in n-hexane, petroleum ether, and silicone oil was determined. The results show that silicone oil has the highest absorption capacity while n-hexane has the lowest value. The absorption capacity is nearly constant even after ten cycles, indicating the efficient recyclability of the as-prepared superhydrophobic/oleophilic cotton fabric for oil separation. The as-prepared superhydrophobic/oleophilic cotton fabric shows excellent separation efficiency, high flux rate, and excellent chemical and mechanical stability.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2020.562