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Journal of Materials Science

, Volume 38, Issue 1, pp 147–154 | Cite as

Studies on blends of epoxy-functionalized hyperbranched polymer and epoxy resin

  • D. Ratna
  • R. Varley
  • R. K. Singh Raman
  • G. P. SimonEmail author
Article

Abstract

An epoxy-functionalized hyperbranched polymer (HBP) was used to toughen a conventional epoxy resin, diglycidyl ether of bisphenol A (DGEBA) cured with diethyltoluene-2,6-diamine (DETDA). There was little change in gel time as a result of addition of HBP, even though the HBP reacts at a slower rate with amine hardeners compared to DGEBA alone. Phase separation was investigated for various HBP contents and as a function of cure conditions as well. The thermal and dynamic viscoelastic behavior of the modified matrices have been examined and compared to the DGEBA epoxy matrix. It appears that the HBP which phase separates does not react as fully as when it is reacted with the amine alone. Nonetheless, good improvement in impact strength as a result of incorporation of HBP were observed and explained in terms of morphological behavior for a DGEBA matrix modified with various amounts of HBP.

Keywords

Polymer Epoxy Phase Separation Diamine Slow Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • D. Ratna
    • 1
  • R. Varley
    • 2
  • R. K. Singh Raman
    • 3
  • G. P. Simon
    • 3
    Email author
  1. 1.Naval Materials Research LaboratoryChickloli, AnandanagarIndia
  2. 2.Molecular ScienceCSIROClaytonAustralia
  3. 3.Department of Materials EngineeringMonash UniversityClaytonAustralia

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