✦ LIBER ✦

An XPS study of different polyvinylalcohol films' surface composition

✍ Scribed by Thami Chihani; Thomas Hjertberg

Publisher: John Wiley and Sons
Year: 1993
Tongue: English
Weight: 392 KB
Volume: 50
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1993.070500806

No coin nor oath required. For personal study only.

✦ Synopsis

Differences in surface chemical composition were found when examining poly (vinylacetateco-vinylalcohol) (PVOH) film surfaces. The content of the acetate groups increased at the outermost surface when dried in air and similar content, when dried against a glass surface, compared to the bulk content. The enrichment varied from 200-1300%, as compared to the bulk content. The enrichment of the acetate groups was studied with X-ray photo electron spectrocopy (XPS or ESCA) at different analyzing angles. The bulk content was measured with Nuclear Magnetic Resonance spectrometry (NMR) .

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