AVS 46th International Symposium
    Surface Science Division Wednesday Sessions
       Session SS-WeP

Paper SS-WeP35
Free Radical Based Amination of Polymeric Interfaces

Wednesday, October 27, 1999, 5:30 pm, Room 4C

Session: Poster Session
Presenter: A. Wagner, Johns Hopkins University
Authors: H. Fairbrother, Johns Hopkins University
A. Wagner, Johns Hopkins University
K. Han, Johns Hopkins University
A. Vaught, Johns Hopkins University
Correspondent: Click to Email
The introduction of nitrogen containing functionality into organic surfaces is often used to modify interfacial characteristics, including permeability, wettability, adhesion, friction, wear and biocompatibilty. Compared to wet-chemical treatments for surface modification vacuum-based technologies are dry, fast and environmentally benign. Compared to the more traditional ion and plasma based modification treatments, the use of gas phase radicals is a relatively underdeveloped component with considerable promise. For example, nascent radical kinetic energies are typically in the range of 0-5eVs in contrast to the several hundred eVs of energy typically associated with ions. To address this issue a new NH radical source, based upon the thermal pyrolysis of hydrazoic acid (HN3) has been developed and characterized using mass spectrometry. Results from the interaction of NH radicals with thiol-based self-assembled monolayers using mass spectrometry, infrared spectroscopy and X-ray Photoelectron Spectroscopy will also be presented.