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Catalytic effect of carbon nanotubes on polymerization of cyanate ester resins

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Journal: eXPRESS Polymer Letters
ISSN 1788-618X

Volume: 3;
Issue: 8;
Start page: 477;
Date: 2009;
Original page

Keywords: Nanocomposites | Thermosetting polymers | Polycyanurates | Carbon Nanotubes | Sonication

ABSTRACT
Kinetic peculiarities of polycyclotrimerization process of dicyanate ester of bisphenol A (DCBA) in the presence of multi-walled carbon nanotubes (MWCNTs) have been investigated using Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy technique. It has been found that even very small amounts of MWCNTs (0.01–0.1 wt%) catalyze the reaction of polycyclotrimerization of DCBA leading to formation of polycyanurate network (PCN)/MWCNTs nanocomposite. However, some decrease in final degree of conversion for nanocomposites compared to the neat PCN within the temperature/time schedule used was observed. The kinetic rate constants increased with addition of MWCNTs and energies of activation were found to be significantly decreased even at low contents of MWCNTs.
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