An XPS study of polyimide film formation from the vapour deposition polymerisation of pyromellitic diimide (PMDI) and 4,4′-oxydianaline (ODA)
✍ Scribed by N. Than-Trong; P.Y. Timbrell; R.N. Lamb
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 508 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Thin ( GZ
40 A) thermally stable polyimide films have been formed via the vapour phase co-deposition of pyromellitic diimide (PMDI) and 4,4'-oxydianaliae (ODA) and subsequent heating up to 400°C on polycrystalline silver substrates. The film cbemistry and composition were studied with X-ray photoelectron spectroscopy (XPS). PMDI has been used as an alternative to PMDA (pyromellitic dianhydride) and provides a new pathway to form polyimide films using the vapour deposition polymerisation (VDP ) method. Ultra-thin ( -z 10 A) fdms of PMDI have also been examined and the XPS results indicate that PMDI bonds to the silver substrate via the imide nitrogen.