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Toughening of trifunctional epoxy using an epoxy‐functionalized hyperbranched polymer

Toughening of trifunctional epoxy using an epoxy‐functionalized hyperbranched polymer Chemorheology of curing as well as the phase separation behavior of an epoxy‐functionalized hyperbranched polymer (HBP)‐modified triglycidyl p‐amino phenol (TGAP) epoxy mixtures has been studied by several techniques. There was little change in gel time as a result of addition of HBP up to 10% of HBP, even though the HBP reacts at a slower rate with amine hardeners compared to the TGAP alone. The thermal and dynamic viscoelastic behavior of the modified matrices have been examined and compared with the unmodified TGAP matrix. Finally, impact properties have been discussed in terms of the morphological behavior for a TGAP matrix modified with various amounts of HBP. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2339–2345, 2003 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Polymer Science Wiley

Toughening of trifunctional epoxy using an epoxy‐functionalized hyperbranched polymer

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References (31)

Publisher
Wiley
Copyright
Copyright © 2003 Wiley Subscription Services
ISSN
0021-8995
eISSN
1097-4628
DOI
10.1002/app.12059
Publisher site
See Article on Publisher Site

Abstract

Chemorheology of curing as well as the phase separation behavior of an epoxy‐functionalized hyperbranched polymer (HBP)‐modified triglycidyl p‐amino phenol (TGAP) epoxy mixtures has been studied by several techniques. There was little change in gel time as a result of addition of HBP up to 10% of HBP, even though the HBP reacts at a slower rate with amine hardeners compared to the TGAP alone. The thermal and dynamic viscoelastic behavior of the modified matrices have been examined and compared with the unmodified TGAP matrix. Finally, impact properties have been discussed in terms of the morphological behavior for a TGAP matrix modified with various amounts of HBP. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2339–2345, 2003

Journal

Journal of Applied Polymer ScienceWiley

Published: Jan 29, 2003

Keywords: ; ;

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