In-situ FTIR spectroscopy of epoxy resin degradation: kinetics and mechanisms.

ABSTRACT: We report on an in situ FTIR study of the thermo-oxidative degradation of a flexible epoxy resin. Different and complementary approaches to the analysis of the spectral data were employed, providing a detailed description of the process in terms of kinetics and mechanisms. A preliminary normal coordinate analysis, based on the DFT method, allowed for a reliable interpretation of the observed spectrum, increasing the amount of available structural information. Two-dimensional correlation spectroscopy provided details on the evolution of the reacting network structure. The relative stability of the various functional groups was ranked, and the most likely sites of initiation were identified. Oxygen fixation on the network chains produced amide and ketone groups, with the latter develo

SUBMITTER: Pannico M 

PROVIDER: S-EPMC11557421 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature