Über den thermischen abbau des poly(ɛ-caprolacton)s

✍ Scribed by Lüderwald, Ingo

• Publisher: Wiley (John Wiley & Sons)
• Year: 1977
• Weight: 234 KB
• Volume: 178
• Category: Article
• ISSN: 0025-116X
• DOI: 10.1002/macp.1977.021780911

✦ Synopsis

Abstract

The thermal and electron impact induced degradation reactions of poly(ε‐caprolactone) {poly[oxy(1‐oxohexamethylene)]} were investigated in a mass spectrometer. It can be shown that the favorated thermal degradation reaction is the cleavage of the ester bond and formation of ω‐hydroxyl and ketene endgroups (Eq. (iii)) and with a lower intensity the cleavage of the OCH~2~‐bond and formation of carboxyl‐and pentenyl endgroups (Eq. (vii)). After electron impact and fragmentation of the pyrolysis products to carboxonium ions an elimination of caprolactone via a “zip”‐mechanism can be observed (Eq. (v)).