AVS 46th International Symposium
    Applied Surface Science Division Thursday Sessions
       Session AS-ThA

Paper AS-ThA5
Surface Analysis of Nitrogen Plasma-Treated Poly (ethylene-2,6-naphthalate) Films using XPS and Gas Phase Derivatization Reactions

Thursday, October 28, 1999, 3:20 pm, Room 6A

Session: Polymer Surfaces, Films, and Interfaces
Presenter: Y. Liu, Eastman Kodak Company
Authors: Y. Liu, Eastman Kodak Company
L. Gerenser, Eastman Kodak Company
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Nitrogen plasma-treatment is a very useful technique for modifying the surface properties of polymers, including adhesion, wettability and biocompatibility, through the introduction of nitrogen functional groups. This presentation will focus on the characterization of nitrogen plasma-treated poly (ethylene-2,6-naphthalate) films using conventional XPS and gas phase derivatization reactions in combination with XPS. The selectivity and yield of trifluoroacetic anhydride for primary amines, and trifluorotolualdehyde for secondary amines, were determined by reacting them with model compounds containing the nitrogen group of interest (e.g., primary and secondary amines, amides and nitriles). The quantity and depth distribution of primary and secondary amines for nitrogen plasma-treated PEN were evaluated as a function of gas composition (e.g, N@sub 2@, NH@sub 3@, and N@sub 2@O) and treatment conditions (power and pressure). Correlations were found between the plasma conditions and the resultant surface chemistries.