Plasma Bromination — A Selective Way to Monotype Functionalized Polymer Surfaces

The lack of selectivity of plasma processes for the introduction of monotype functional groups of sufficient density onto polymer surfaces is a strong limitation for the broader application of all plasma processes. In particular, the broad variety of plasma products and the post-plasma oxygen attachment are strong hindrances for specific graft reactions with plasma-introduced functional groups at the polymer surface. For grafting of molecules and oligomers onto the polymer surface, monotype functional groups are needed as anchoring points for their covalent grafting. Convenient monotype functional groups for grafting are amino, aldehyde, epoxy, carboxylic acid, sulfonic acid, double bonds, or other groups.