Formation and Structure of Perfluorosulfonated Ionomer Thin Film on a Graphite Surface

摘要

Adsorption process and structure of perfluorosulfonated acid (PFS A) polymer on a highly oriented pyrolytic graphite (HOPG) surface were elucidated by an in situ tapping mode atomic force microscope (AFM). Micellar aggregates of PFSA polymers first randomly adsorbed on a bare HOPG surface, and then the adsorbed aggregates extended under the influence of atomic arrangement of HOPG surface, to form two-dimensionally ordered domains.