Deposition of 2-oxazoline-based plasma polymer coatings using atmospheric pressure helium plasma jet
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(Published version)
Date
2019
Authors
Al Bataineh, S.A.
Cavallaro, A.A.
Michelmore, A.
Macgregor, M.N.
Whittle, J.D.
Vasilev, K.
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Journal article
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Plasma Processes and Polymers, 2019; 16(10, article no. e1900104):1-11
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Abstract
We report on the use of helium plasma jet for plasma polymerisation of 2‐methyl‐2‐oxazoline (OX) on heated silicon substrates. The X‐ray photo electron spectroscopy (XPS) characterisation shows a substantial improvement in film stability in buffer solution when depositing at temperatures above 50°C. Principal component analysis of the time‐of‐flight–secondary ion mass spectrometry data shows excellent correlation with the XPS results, providing insights into the degree of crosslinking in the plasma coatings as a function of substrate temperature. Atomic force microscopy images showed the topography of OX plasma polymer coatings deposited at 80°C and 120°C to be smoother with lower surface roughness values compared to those produced at 50°C. Finally, an 80% reduction in the adhesion of Staphylococcus epidermidis is achieved at the centre of the plasma coatings deposited at 120°C.
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Data source: Supporting information, https://doi.org/10.1002/ppap.201900104
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Copyright 2019 WILEY‐VCH Verlag
Access Condition Notes: Accepted manuscript available after 1 October 2019