Accession Number:

ADA183711

Title:

An XPS (X-Ray Photoelectron Spectroscopy) Study of the Composition of Thin Polyimide Films Formed by Vapor Deposition.

Descriptive Note:

Technical rept.,

Corporate Author:

MAINE UNIV AT ORONO LAB FOR SURFACE SCIENCE AND TECHNOLOGY

Personal Author(s):

• Lamb,R. N.
• Baxter,J.
• Grunze,M.
• Kong,C. W.
• Unertl,W. N.

Report Date:

1987-07-15

Pagination or Media Count:

35.0

Abstract:

Films of polymide 8nm were formed on a polycrystalline silver surface following heating of a vapor deposited layer of 4,4 oxydianiline ODA and 1,2,4,5 Benzenetetracarboxylic anhydride PMDA. The imidization reaction leading to polymer formation was followed in situ with X-ray Photoelectron Spectroscopy. The uncertainties inherent in a quantitative analysis of the composition of the top 8 nm surface layer corresponding to the sampling depth of the technique are discussed with respect to thick films of ODA and PMDA adsorbed on a clean copper 111 surface at 200 K. The fully cured polymide film contains excess ODA-like and PMDA-like constituents as trapped molecules or terminal groups.

Descriptors:

• *POLYIMIDE RESINS
• *THIN FILMS
• *X RAY PHOTOELECTRON SPECTROSCOPY
• *VAPOR DEPOSITION
• *POLYMERIC FILMS
• COPPER
• QUANTITATIVE ANALYSIS
• LAYERS
• SURFACES
• POLYMERS
• DEPTH
• SAMPLING
• THICK FILMS
• MOLECULES
• TRAPPING(CHARGED PARTICLES)
• SOLID STATE ELECTRONICS
• SILVER
• POLYCRYSTALLINE
• ANILINES
• ANHYDRIDES

Subject Categories:

• Physical Chemistry
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE