Photo-oxidation of epoxy resins cured by non-aromatic amines |
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| Affiliation: | 1. Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Material and Manufacturing Department, School of Mechanical Engineering, University of Campinas (UNICAMP), Campinas, SP, 13083-860 Brazil;3. Department of Management and Engineering, University of Padova, StradellaS.Nicola, 3, 36100 Vicenza, Italy;1. Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan;2. Department of Neurosurgery, Kurashiki Central Hospital, Okayama, Japan;1. Technische Universität Darmstadt, Department of Materials and Earth Sciences, Alarich-Weiss-Straße 2, 64287 Darmstadt, Germany;2. Technische Universität Darmstadt, Department of Chemistry, Eduard-Zintl-Institute, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany;3. Dokuz Eylul University, Science Faculty, Department of Chemistry, Tinaztepe Kampusu, Buca, 35160 Izmir, Turkey;4. Technische Universität Darmstadt, MPA/IfW Darmstadt, Grafenstraße 2, 64283 Darmstadt, Germany;1. Chemical and Environmental Engineering Department, University of the Basque Country UPV/EHU, Plaza Europa, 1, 20018 San Sebastián, Spain;2. Poznan University of Life Sciences, Department of Wood Based Materials, Division of Gluing and Finishing of Wood, Wojska Polskiego 38/42 60-627, 60627 Poznan, Poland |
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| Abstract: | ![]()
The photo-oxidation of epoxy resins based on bisphenol A and cured by non-aromatic amines: diethylene triamine, aminoethyl piperazine and isophorone diamine results in carbonyl and amide formation, decrease of glass transition temperature, and the appearance of a new endotherm at 70–80°C in the DSC traces. The carbonyl and, essentially the amide yield depend strongly on the hardener structure and concentration. The mechanisms of formation of these groups are discussed. |
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