Abstract
Polycyanurates generated from polycyclotrimerization of bisphenol A dicyanate (BPADCy) were blended with either hydroxyl-terminated or cyanated poly(ether sulfone) (as HPES or CPES, respectively) to improve their mechanical properties. Results from scanning electron microscopy suggest a discrete-continuous fracture surface for the polycyanurate blended with 10wt% of HPES; but for the CPES-blended polycyanurate, a blurring interface between particle and matrix was observed. The blurring interface was originated from inter-reactions through the cyanate groups in CPES and BPADCy. This blurring interface can also be generated if 1wt% of catalyst system (n-nonylphenol/cobaltic acetylacetonate) was used during cure of mixtures of HPES and BPADCy. This blurring interface in the catalyzed system is attributed to the chemical reaction between the hydroxyl termini in HPES and the cyanate groups in BPADCy. The discrete particle sizes in the cured HPES/BPADCy strongly depend on the curing temperatures. With a higher curing temperature, a larger average particle size was generated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
