材料表面浸润性对细菌粘附的影响

Effect of Different Surface Wettability on Bacteria Adhesion

DOI：10.3969/j.issn.1673-1689.2019.03.004

中文关键词: 表面接枝 表面浸润性 抑制细菌粘附 生物膜

英文关键词: chemical grafting,surface wettablity,bacteria adhesion inhibition,biofilm

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中文摘要:

材料表面的细菌粘附常引起食品腐败或植入性感染，有时甚至会引发疾病，而控制细菌在材料表面的初始粘附能够减少这些安全隐患。作者通过化学接枝的方法，制备了不同表面浸润性的材料，并与大肠杆菌、铜绿假单胞菌及金黄色葡萄球菌等3种常见致病菌共同培养，系统地研究了材料表面浸润性对细菌粘附的影响。研究结果表明，随着材料表面疏水性的增加，其抗细菌粘附能力显著提升。另外，表面带负电材料的抗菌能力更强。这些结果能够帮助理解细菌在材料表面粘附的内在机理，同时有助于抗菌材料的设计和制备。

英文摘要:

Bacteria adhesion on surfaces often causes implanted infections，food spoilage and human illness. The control of the initial adhesion to materials is very important to avoid safety and health problems. In this study，materials with different surface wettability were fabricated via chemical grafting. Three model strains（Escherichia coliBL21，Staphylococcus aureus6538 andPseudomonas aeruginosaATCC 9027） were imported to demonstrate the influence of surface wettability markedly. Besides，surfaces with negative charge were more resistant to bacterial adhesion. The results of this study provided new insights into the mechanism of bacteria adhesion，and could be effectively used in designing of anti-bacterial materials.

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