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Effects of Precursor and Deposition Conditions on Prevention of Bacterial Biofilm Growth on Chlorinated Plasma Polymers
Author(s) -
Michl Thomas D.,
Coad Bryan R.,
Hüsler Amanda,
Valentin Jules D. P.,
Vasilev Krasimir,
Griesser Hans J.
Publication year - 2016
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.201500191
Subject(s) - polymer , coating , chemical engineering , biofilm , plasma , antibacterial activity , deposition (geology) , bacterial growth , materials science , chemistry , antimicrobial , nanotechnology , organic chemistry , bacteria , paleontology , physics , quantum mechanics , sediment , biology , engineering , genetics
In this work, we aimed to understand the key properties that confer antibacterial activity to chlorinated plasma polymers, by investigating plasma polymers deposited from a series of chlorinated precursor molecules and also investigating the effect of plasma conditions. Results revealed that only precursors with a Cl/C ratio ≥1.5 generate effective antibacterial coatings, whereas the coating thickness is irrelevant. Furthermore there is a “sweet spot” in process conditions to generate coatings with optimal antimicrobial activity. Lastly, we investigated the release of chlorinated fragments and attenuation of the surface‐active antibacterial properties of the chlorinated plasma polymers by overcoating them with a perfluorinated plasma polymer.