Polypropylene meltblown nonwoven fabric (PP MB) has become a research hotspot in oily wastewater treatment owing to its low cost
controllable fiber
and excellent chemical stability. However
its inherent hydrophobicity limits its application in oily wastewater treatment systems. Inspired by the adhesive properties of mussels
this study adopted a biomimetic strategy to construct a Cu
2+
/tannic acid (TA) coating on the surface of polypropylene fibers
successfully preparing Cu
2+
/TA@PP MB composite materials. Through systematic characterization of the microstructure
chemical structure
and oil-water separation performance of the composite material before and after modification
and evaluation of its stability
the results showed that when the tannic acid mass concentration was 6 g/L and the CuSO
4
mass concentration was 1.2 g/L
the Cu
2+
/TA coating uniformly covered the fiber surface; the water contact angle of the composite material decreased to 27.4°
and the underwater oil contact angle reached 114.4°
demonstrating excellent hydrophilicity and underwater oleophobicity. After 20 rounds of oil-water separation experiments
the separation efficiency remained above 95%. Under ultrasonic treatment and high-salt environments
the oil-water separation performance of the composite material remained stable
exhibiting excellent cyclic stability and environmental tolerance. This study provides new insights into the development of durable and reusable PP MB-based oil-water separation materials.
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references
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Related Author
HAO Yun-ge
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LI Jie-fang
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ZHOU Chang-e
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LIU Han-feng
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Related Institution
Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, Wuhan Textile University
Key Laboratory of Eco-textiles of Ministry of Education, College of Textile Science and Engineering, Jiangnan University
School of Petrochemical Technology, Lanzhou University of Technology
Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences
Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology, Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University