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Rheological behavior during the phase separation of thermoset epoxy/thermoplastic polymer blends

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Authors
Kim, Hongkyeong; Char, Kookheon
Issue Date
2000-03
Publisher
한국유변학회 = The Korean Society of Rheology
The Australian Society of Pheology
Citation
Korea-Australia Rheology Journal 12, 77
Keywords
epoxypolyethersulphonereaction induced phase separationsuspension modelrheology
Abstract
Rheological behavior of thermoset/thermoplastic blends of epoxy/polyethersulphone (PES) was monitored
during curing of the epoxy resin. During the isothermal curing of the mixture, a fluctuation in viscosity just
before the abrupt viscosity increase was observed. This fluctuation is found to be due to the phase separation
of PES from the matrix epoxy resin during the curing. The experimentally observed viscosity fluctuation
is simulated with a simple two phase suspension model in terms of the increase in domain size. The viscosity
profiles obtained experimentally at different isothermal curing temperatures are in good agreement
with the predictions from the simple model taking into account the viscosity change due to the growth of
PES domain and the network formation of the epoxy matrix.
ISSN
1226-119X
Language
English
URI
http://www.rheology.or.kr

http://hdl.handle.net/10371/5898
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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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