涂层
超亲水性
聚电解质
材料科学
聚乙烯亚胺
化学工程
纳米技术
润湿
聚合物
复合材料
化学
转染
生物化学
工程类
基因
作者
Ruixia Kong,Junfeng Ren,Min Mo,Lianbin Zhang,Jintao Zhu
标识
DOI:10.1016/j.colsurfa.2022.130484
摘要
In this study, a multifunctional coating with antifogging, self-cleaning, antibacterial, and self-healing capabilities is developed based on polyelectrolyte complexes of polyethylenimine (PEI), phytic acid (PA), and Cu2+ (denoted as PEI-PA-Cu). The multifunctional PEI-PA-Cu coating with high transparency can be prepared by spraying, brushing, or other one-step deposition onto various substrates (e.g., polymeric substrates and glass slides). Such a coating shows an excellent antifogging effect in both high temperature (85 ℃) and cold environments (−20 ℃) and maintains stable antifogging performance after placing in ∼65 ℃ vapor for 9 h. In addition, the coating is superhydrophilic and allows for easy spreading of water to isolate the oily contaminants, realizing self-cleaning. Meanwhile, the coating possesses superior antibacterial capability against Escherichia coli and Staphylococcus aureus thanks to PEI with amino groups and Cu2+. Importantly, the PEI-PA-Cu coating can heal damages rapidly and repeatedly due to the presence of hydrogen bonds and electrostatic interactions, effectively prolonging the service life. This study provides a facile route to construct multifunctional superhydrophilic coatings with promising prospects in the field of personal protective, medical, and optical devices.
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