PDMS/γ-Bi2O3/SiO2涂层具有卓越的抗菌性能和机械耐久性,基于摩擦诱导的策略
Wanchun Lin1, Yingchun Liu1, Jiayuan Yang1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, PR China; Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang 515200, PR China.
Colloids and surfaces. B, Biointerfaces
|February 7, 2026
概括
一种新的耐用,摩擦激活的疏水涂层使用氧化,PDMS和提供持续的抗菌活性. 这种创新的表面通过有效打击医疗和公共表面上的细菌来提高公共健康.
科学领域:
- 材料科学 材料科学 材料科学
- 表面化学 表面化学
- 生物技术是生物技术.
背景情况:
- 抗微生物耐药性的增加需要先进的抗菌表面.
- 现有的金属氧化物涂层在离子释放和机制多样性方面存在局限性.
- 耐用,自我激活的抗微生物表面对于公共卫生应用至关重要.
研究的目的:
- 开发一种机械坚固,摩擦激活的疏水性抗菌涂层.
- 为了整合玛-双氧化物 (γ-Bi2O3),聚二甲基 (PDMS) 和纳米级疏水性 (SiO2).
- 为了评估涂层的抗菌功效,耐用性和细胞毒性.
主要方法:
- 复合涂层的制造通过等离子处理和西兰接种.
- 表面性能的表征,包括疏水性和机械稳定性.
- 在模拟磨损后对大肠杆菌和黄金杆菌的抗菌活性的评估.
- 使用细胞活力试验评估细胞毒性.
主要成果:
- 经过1000次磨损循环,P1B2S0.04涂层表现出增强的疏水性 (水接触角度从113.1°增加到145.9°).
- 在900个磨损周期后,对大肠杆菌 (>99.6%) 和黄金杆菌 (>97.7%) 的高抗菌率保持不变.
- 细胞毒性测试显示细胞活力超过80%,表明良好的生物相容性.
结论:
- 开发的涂层表现出持续的抗菌性能和机械强度.
- 摩擦激活增强了涂层的疏水和抗菌特性.
- 该涂层显示出在高流量医疗和公共表面长期使用的巨大潜力.
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