Sulfonated Surfaces by Sulfur Dioxide Plasma Surface Treatment of Plasma Polymer Films

The preparation of thin film coatings with sulfonate and sulfate groups by plasma techniques is not straightforward due to limited volatility of suitable process vapours. We report a combination of plasma polymerisation and plasma treatment, treating heptylamine (HA‐SO 2 ) and 1,7‐octadiene (OD‐SO 2 ) plasma polymers with sulfur dioxide plasma. HA‐SO 2 and OD‐SO 2 plasma polymer surfaces exhibited different compositions with the latter showing...