Journal
EUROPEAN POLYMER JOURNAL
Volume 48, Issue 6, Pages 1034-1041Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2012.03.012
Keywords
Cyanate ester resin; Graphene oxide; Nanocopomposites; Curing dynamics; Network formation
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The curing dynamics and network formation of cyanate ester resin/graphene oxide (GO) nanocomposites were studied by means of Differential Scanning Calorimetry (DSC), Fourier Transform Infrared (FT-IR) and Raman spectroscopies. The incorporation of GO into the resin showed a strong catalytic effect on the cure of the resin, especially in the initial stages. Addition of 4 wt.% GO resulted in the decrease of curing temperature significantly about 97 degrees C. Activation energy of the nanocomposites also maintained at a low level till the end of the cure. The most effective catalytic behavior was observed with 1 wt.% GO. Both FT-IR and Raman spectra revealed that -OH group in GO reacted with cyanate group O-C N in the resin to form -O-(C=NH)-O- bond in the early stages of the cure. These results could provide a low temperature curing route for cyanate ester resins with improved curing efficiency. (C) 2012 Elsevier Ltd. All rights reserved.
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