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Plasma‐Mediated Modification of Austenitic Stainless Steel: Application to the Prevention of Yeast Adhesion
Author(s) -
Saulou Claire,
Despax Bernard,
Raynaud Patrice,
Zanna Sandrine,
Marcus Philippe,
MercierBonin Muriel
Publication year - 2009
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200900069
Subject(s) - hexamethyldisiloxane , adhesion , surface modification , materials science , austenitic stainless steel , x ray photoelectron spectroscopy , plasma , yeast , chromium , cell adhesion , chemical engineering , metallurgy , composite material , chemistry , corrosion , biochemistry , physics , quantum mechanics , engineering
The work is focused on defining a stainless steel surface treatment to prevent microbial adhesion. The yeast Saccharomyces cerevisiae was selected as the model for eukaryotic cells. Different surface cleaning procedures, including chemical and plasma‐mediated treatments, were studied. Detachment experiments displayed no modification in yeast adhesion, despite significant variations in the physico‐chemical properties of the solid surface. Plasma‐mediated thin coatings (≈375 nm) were then deposited on stainless steel applying hexamethyldisiloxane/oxygen plasma. FT‐IR study revealed a dense SiOSi network, while XPS analysis detected no more iron or chromium at the extreme surface. Detachment experiments demonstrated that these films were successful in preventing cell adhesion, due to a barrier effect.