Oxidation profiles of polyamide 6,6 studied by imaging chemiluminescence and FTIR

Degradation of carboxylated styrene butadiene rubber based water born paints. Part 1: Effect of talc filler and titania pigment on UV stability

“…Freshly cut cross-sections of unfilled, TR92 filled and talc filled c-SBR samples (both unaged and degraded in the Microscal unit), were analysed using the imaging chemiluminescence (ICL) facility at KTH Sweden [12]. ICL enabled visualisation of the intensity of light emitted as a consequence of being previously exposed to UV.…”

Chemiluminescence Processes in Polymeric Materials

“…In the case of polyamides with only carboxylic end groups, loss of molecular weight is observed from the beginning of degradation [107,108]. These polymers have been extensively studied, and the oxidation behavior of stressed polyamides, stabilized polyamides, and the influence of reactive end groups have been analyzed by chemiluminescence technique [109][110][111][112]. For polyamide 6,6, a bimolecular hydroperoxide decomposition model describes the chemiluminescence runs, which are composed of three interdependent stages related to (1) termination of peroxyl radicals generated in processing and storage, (2) depletion of terminal amino groups due to their direct oxidation or to the condensation reactions with oxidation products, and (3) oxidation of CH 2 groups close to an amido group.…”

FTIR Microspectroscopy of Polymeric Systems

“…Injection molded samples of polyamide 6,6 [39] were aged at elevated temperatures and examined to determine changes. Skin-core oxidation was observed and evaluated by infrared spectroscopy and by imaging chemiluminescence.…”