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Curing behavior of tetrafunctional epoxy resin/hyperbranched polymer system

Cited 68 time in Web of Science Cited 70 time in Scopus
Authors
Oh, Joon Hak; Jang, Jyongsik
Issue Date
2001
Publisher
Elsevier
Citation
Polymer 2001;42:8339
Keywords
Hyperbranched polymerCure behaviorTetrafunctional epoxy resin
Abstract
The effects of hyperbranched polymers (HBPs) on the cure behavior of tetrafunctional epoxy resin were investigated using differential scanning calorimetry (DSC) and FT-IR spectroscopy and compared with those of the linear analog. The hydroxyl terminal groups of the HBP initiated the cure reaction through proton donor–acceptor complex. The heat of cure in epoxy/HBP system was higher than that in epoxy/linear polymer system. The activation energy for cure reaction was lower in epoxy/HBP system. When the hydroxyl terminal groups of the HBP were transformed into benzoate groups, the induction time for cure reaction became much longer and the heat of cure was reduced. The isothermal kinetic parameters were obtained from Kamal equation, where the overall reaction order was ca. 1.5. As the cure reaction proceeded, the characteristic peaks of epoxy ring were decreased and H-bonded C=O peak was increased. The intensity of the H-bonded C=O peak was increased with increasing amount of the HBP.
ISSN
0032-3861
Language
English
URI
https://hdl.handle.net/10371/62264
DOI
https://doi.org/10.1016/S0032-3861(01)00365-2
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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