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Graphene oxide reinforced Ni-P coatings for bacterial adhesion inhibition

机译：石墨烯氧化物增强Ni-P涂层用于细菌粘附抑制

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摘要

Bacterial adhesion on the surfaces of medical devices, food processing equipment, heat exchangers and ship hulls has been recognized as a widespread problem. Bacterial adhesion on a surface is influenced by surface physical and chemical properties of the surface. In this paper, polyethyleneimine (PEI) grafted graphene oxide (GO) nanosheets were incorporated into Ni-P coatings by an electroless plating technique to modify the surface energy, and therefore to influence the interactions between the prepared surfaces and the tested bacteria. Ni-P-GO coatings were investigated by SEM, AFM, Raman spectrum and XPS. Contact angles of Ni-P-GO coatings with different GO loadings were tested and the surface free energies and their dispersive and polar components were calculated using the van Oss acid-base approach. The results showed that the surface free energies of the coatings had a significant influence on S. aureus adhesion. The Ni-P-GO coatings showed excellent antibacterial adhesion activity. Extended DLVO theory is used to explain the antibacterial adhesion behavior. The novel coatings reported here can be used in controlling bacterial adhesion and biofilm formation for various applications.
机译：在医疗器械，食品加工设备，热交换器和船壳的表面上的细菌粘附被认为是一个广泛的问题。表面上的细菌粘附受表面表面物理和化学性质的影响。本文通过化学镀技术将聚乙烯亚胺（PEI）接枝氧化物（GO）纳米片掺入Ni-P涂层中以改变表面能，从而影响所制备的表面和测试细菌之间的相互作用。通过SEM，AFM，拉曼光谱和XPS研究了Ni-P-Go涂层。测试了具有不同GO载荷的Ni-P-Go涂层的接触角，并使用van OSS酸碱方法计算表面自由能和它们的分散和极性部件。结果表明，涂​​层的表面自由能对S.UUREUS粘附有显着影响。 Ni-P-Go涂层显示出优异的抗菌粘附活性。扩展DLVO理论用于解释抗菌粘附性能。报告的新型涂料可用于控制各种应用的细菌粘附和生物膜形成。

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  • 来源
    《RSC Advances》 |2016年第52期|共8页
  • 作者

    Shao Wei; Wu Jimin; Liu Hui; Dong Guanghui; Wang Shuxia; Min Huihua; Huang Min;

  • 作者单位

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Adv Anal &

    Testing Ctr Nanjing 210037 Jiangsu Peoples R China;

    Nanjing Forestry Univ Coll Chem Engn Nanjing 210037 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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