SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 55 ›› Issue (3): 73-83.DOI: 10.1016/j.cjche.2022.05.003

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Facile fabrication of durable superhydrophobic fabrics by silicon polyurethane membrane for oil/water separation

Taoyan Mao1, Runhui Xiao1, Peng Liu1, Jiale Chen1, Junqiang Luo1, Su Luo2, Fengwei Xie3, Cheng Zheng1,4   

  1. 1. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China;
    2. Guangdong Debao Environmental Technology Research Co. Ltd, Guangzhou 510300, China;
    3. School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom;
    4. Guangzhou Vocational College of Science and Technology, Guangzhou 510550, China
  • Received:2021-11-21 Revised:2022-05-12 Online:2023-06-03 Published:2023-03-28
  • Contact: Fengwei Xie,E-mail:fwhsieh@gmail.com,david.xie@newcastle.ac.uk;Cheng Zheng,E-mail:zhengcheng5512@163.com
  • Supported by:
    We gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (21808044).

Facile fabrication of durable superhydrophobic fabrics by silicon polyurethane membrane for oil/water separation

Taoyan Mao1, Runhui Xiao1, Peng Liu1, Jiale Chen1, Junqiang Luo1, Su Luo2, Fengwei Xie3, Cheng Zheng1,4   

  1. 1. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China;
    2. Guangdong Debao Environmental Technology Research Co. Ltd, Guangzhou 510300, China;
    3. School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom;
    4. Guangzhou Vocational College of Science and Technology, Guangzhou 510550, China
  • 通讯作者: Fengwei Xie,E-mail:fwhsieh@gmail.com,david.xie@newcastle.ac.uk;Cheng Zheng,E-mail:zhengcheng5512@163.com
  • 基金资助:
    We gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (21808044).

Abstract: Nowadays, oil contamination has become a major reason for water pollution, and presents a global environmental challenge. Although many efforts have been devoted to the fabrication of oil/water separation materials, their practical applications are still hindered by their weak durability, poor chemical tolerance, environmental resistance, and potential negative impact on health and the environment. To overcome these drawbacks, this work offers a facile method to fabricate the eco-friendly and durable oil/water separation membrane fabrics by alkaline hydrolysis and silicon polyurethane coating. The X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy results demonstrate that silicon polyurethane membrane could be coated onto the surface of hydrolyzed polyester fabric and form a micro-/nano-scaled hierarchical structure. Based on this, the modified fabric could have a stable superhydrophobic property with a water contact angle higher than 150°, even after repeated washing and mechanical abrasion 800 times, as well as chemical corrosion. Moreover, the modified fabrics show excellent oil/water separation efficiency of up to 99% for various types of oil–water mixture. Therefore, this durable, eco-friendly and cost-efficient superhydrophobic fabric has great potential in large-scale oil/water separation.

Key words: Superhydrophobic fabrics, Silicon polyurethane membrane, Durability, Separation, Polymers, Waster water

摘要: Nowadays, oil contamination has become a major reason for water pollution, and presents a global environmental challenge. Although many efforts have been devoted to the fabrication of oil/water separation materials, their practical applications are still hindered by their weak durability, poor chemical tolerance, environmental resistance, and potential negative impact on health and the environment. To overcome these drawbacks, this work offers a facile method to fabricate the eco-friendly and durable oil/water separation membrane fabrics by alkaline hydrolysis and silicon polyurethane coating. The X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy results demonstrate that silicon polyurethane membrane could be coated onto the surface of hydrolyzed polyester fabric and form a micro-/nano-scaled hierarchical structure. Based on this, the modified fabric could have a stable superhydrophobic property with a water contact angle higher than 150°, even after repeated washing and mechanical abrasion 800 times, as well as chemical corrosion. Moreover, the modified fabrics show excellent oil/water separation efficiency of up to 99% for various types of oil–water mixture. Therefore, this durable, eco-friendly and cost-efficient superhydrophobic fabric has great potential in large-scale oil/water separation.

关键词: Superhydrophobic fabrics, Silicon polyurethane membrane, Durability, Separation, Polymers, Waster water