Increase in the Hydrophilicity and Lewis Acid-Base Properties of Solid Surfaces Achieved by Electric Gliding Discharge in Humid Air: Effects on Bacterial Adherence

作     者：J.O.KAMGANG M.NAITALI J.-M.HERRY M.-N.BELLON-FONTAINE J.-L.BRISSET R.BRIANDET 

作者机构：Laboratory of Interfacial Electrochemistry and Analytical ChemistryUniversity of Rouen INRA(National Institute for Agricultural Research)UMR 763 Bio-adhesion and Hygiene of Materials AgroParisTechUMR 763 Bio-adhesion and Hygiene of Materials AgroParisTechUMR763 Bio-adhesion and Hygiene of Materials 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2009年第11卷第2期

页      面：187-193页

核心收录：

学科分类：071011[理学-生物物理学] 0710[理学-生物学] 07[理学] 

基　　金：AcknowledgmentsThe authors thank Josette Rault for the characterisation of S. epidermidis cells. Jean-Omer KAMGANG NOUBISSI's thesis received financial support from the French Embassy in Cameroon  via EGIDE scholarship 

主　　题：gliding arc plasma surface energy properties polymers stainless steel surface hydrophilicity atomic force microscopy 

摘      要：This study addressed the effects of treatment with gliding discharge plasma on the surface properties of solid materials, as well as the consequences concerning adherence of a model bacterium. As evaluated by contact angles with selected liquids, plasma treatment caused an increase in surface hydrophilicity and in the Lewis acid-base components of the surface energy of all materials tested. These modifications were more marked for low density polyethylene and stainless steel than for polytetrafiuoroethylene. After treatment, the hydrophilicity of the materials remained relatively stable for at least 20 days. Moreover, analysis of the topography of the materials by atomic force microscopy revealed that the roughness of both polymers was reduced by glidarc plasma treatment. As a result of all these modifications, solid substrates were activated towards micro-organisms and the adherence of S. epidermidis, a negatively charged Lewis-base and mildly hydrophilic strain selected as the model, was increased in almost all the cases tested.