| 引用本文: | 孟芸芸,齐杨,江华阳,邢素丽,王松,吴楠.可快速重构的抗菌超疏水涂层制备及性能研究[J].材料科学与工艺,2025,33(5):54-61.DOI:10.11951/j.issn.1005-0299.20240027. |
| MENG Yunyun,QI Yang,JIANG Huayang,XING Suli,WANG Song,WU Nan.Preparation and performance study of antibacterial superhydrophobic coating with rapid reconstructibility[J].Materials Science and Technology,2025,33(5):54-61.DOI:10.11951/j.issn.1005-0299.20240027. |
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| 摘要: |
| 医疗器械表面快捷构筑自清洁、抗菌超疏水涂层对于提高战场救护效率具有重要意义。典型的“粘合剂+纳米颗粒”策略制备的超疏水涂层微结构的损坏通常早于涂层的剥落,传统的结构强化策略往往面临成本高昂、工艺繁琐、可维护性差等问题。本文基于手持式喷壶开发了一种可快速重构临时防护涂层,该涂层由壳聚糖/聚乙烯醇为基底,通过疏水二氧化钛团聚体构造粗糙结构,其接触角达155°,滚动角可达5°。耐久性测试表明,制备的涂层可耐受100次医用手套的摩擦以及2 000 g沙土颗粒的冲击,对金黄葡萄球菌和大肠杆菌的抗菌性分别为99.9%和94.0%。此外,利用壳聚糖的溶胀特性可将涂层快速去除。该涂层具有自清洁、抗菌性、可快速重构的优点,在战场医疗救护中展现出强大应用潜力。 |
| 关键词: 壳聚糖 二氧化钛 超疏水 抗菌 可重构 |
| DOI：10.11951/j.issn.1005-0299.20240027 |
| 分类号:TB332 |
| 文献标识码:A |
| 基金项目:湖南省自然科学基金资助项目(2021JJ30028). |
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| Preparation and performance study of antibacterial superhydrophobic coating with rapid reconstructibility |
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MENG Yunyun1, QI Yang2, JIANG Huayang1, XING Suli1, WANG Song1, WU Nan1
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(1.College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;2.Basic Education College, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| It is of great significance to rapidly construct self-cleaning and antibacterial superhydrophobic coating on the surface of medical instruments to improve the efficiency of battlefield rescue. The damage to the microstructure of the superhydrophobic coating prepared by the typical “adhesive + nanoparticle” strategy is usually earlier than the peeling of the coating, while structural reinforcement strategies often suffer from high costs, complicated processes, and poor maintainability. In this study, a simple bottle-based spray technology has been developed for a rapidly reconstructable temporary protective coating. The coating, composed of chitosan/polyvinyl alcohol as a base, utilizes hydrophobic titanium dioxide aggregates to construct a rough structure, yielding a contact angle of 155° and sliding angle of 5°. Durability tests show that the prepared coating can withstand 100 cycles of friction with medical gloves and a sand impact of 2 000 g, and the antibacterial ratios against Staphylococcus aureus and Escherichia coli are 99.9% and 94.0%, respectively.Additionally, the swelling properties of chitosan allow for rapid removal of the coating. This self-cleaning, rapid reconstructible antibacterial superhydrophobic coating exhibits strong application potential in battlefield medical aid. |
| Key words: chitosan titanium dioxide (TiO2) superhydrophobic antibacterial reconstructible |
