Preparation and Adhesion of Ultra Thin Polyimide Films on Polycrystalline Silver.
Abstract
4.4-Oxydianiline (ODA) and 1,2,3,5 Benzenetetracarboxylic Anhydride (PMDA) from the vapor phase were deposited onto a polycrystalline silver substrate and followed the polymerization of the two components to form ultra-thin polyimide films (d approx. 11A) by X-ray photoelectron spectroscopy. Both PMDA and ODA chemisorb on the clean surface under partial fragmentation. Co-deposition of ODA and PMDA followed by heating of the substrate led to formation of thermally stable (T < 450C) polyimide films. Our data indicate that adhesion of the polyimide film to the surface involves chemical bonding to fragmented PMDA and/or ODA chemisorbed on the substrate. Our experiments show that polyimide films can be prepared sufficiently thin to allow the application of surface sensitive techniques to probe the substrate-polymer interface and to study the basic physics and chemistry of adhesion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 07, 1986
- Accession Number
- ADA174023
Entities
People
- M. Grunze
- R. N. Lamb
Organizations
- University of Maine