材料科学技术(英文版)2021，Vol.89Issue(30) ：233-241.

Mechanically durable antibacterial nanocoatings based on zwitterionic copolymers containing dopamine segments

Jingzhi Yang Hongchang Qian Junpeng Wang Pengfei Ju Yuntian Lou Guoliang Li Dawei Zhang
材料科学技术(英文版)2021，Vol.89Issue(30) ：233-241.
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Mechanically durable antibacterial nanocoatings based on zwitterionic copolymers containing dopamine segments

Jingzhi Yang 1Hongchang Qian 2Junpeng Wang 3Pengfei Ju 4Yuntian Lou 1Guoliang Li 3Dawei Zhang2
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作者信息

  • 1. Beijing Advanced Innovation Center for Materials Genome Engineering,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China
  • 2. Beijing Advanced Innovation Center for Materials Genome Engineering,Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;BRI Southeast Asia Network for Corrosion and Protection,Shunde Graduate School of University of Science and Technology Beijing,Foshan 528000,China
  • 3. Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China
  • 4. Shanghai Aerospace Equipment Manufacturer,Shanghai 200245,China
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Abstract

Developing an effective and durable antibacterial surface is important for surgical tools and biomedical implants.In this work,a zwitterionic copolymer containing catechol groups as biomimetic anchoring segments was coated onto 316 L stainless steel via drop-casting.Energy-dispersive X-ray spectroscopy(EDS) and water contact angle (WCA) measurements indicated that the coatings made of the copolymers containing zwitterionic and dopamine segments at the molar ratios of 8:2 and 6:4 exhibited stronger stability and mechanical durability than the one at 9:1 after inducing tape-peeling and ultrasonication damage.The mechanically durable nanocoatings exhibited excellent antibacterial performance against Staphylococcus aureus and Escherichia coli in a period of 3 days.The nanocoatings with zwitterionic and dopamine segments at the molar ratio of 8:2 were further evaluated and demonstrated durable antibacterial performance after tape-peeling and ultrasonication treatments.

Key words

Antibacterial surface/Zwitterionic/Polymers/Coatings

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基金项目

National Natural Science Foundation of China(51771029)

National Natural Science Foundation of China(51771122)

Shanghai International Science and Technology Cooperation Project(17520731800)

China Postdoctoral Science Foundation(2019M660453)

出版年

2021
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量54
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