Structure development in cyanate ester polymenzation

Leo J. Kasehagen, Christopher W. Macosko

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

We present results on the product distribution obtained from the polymerization of the dicyanate monomer of bisphenol A carried out under different reaction conditions. Small quantities of side-products were observed using both size exclusion chromatography and high-pressure liquid chromatography for samples polymerized under an inert atmosphere. Despite the presence of side-products, the oligomer distribution from SEC, after correcting for differences in refractive index, was found to agree well with random branching predictions. Results from HPLC also confirm good agreement with the theoretical prediction. Furthermore, a gel conversion of approximately 0.51(-0.01, +0.03) was measured for the inert atmosphere product, which is within experimental error of the ideal value of 0.50. The monomer content of a polymerization carried out open to the atmosphere, however, showed significant disagreement with theory.

Original languageEnglish (US)
Pages (from-to)237-247
Number of pages11
JournalPolymer International
Volume44
Issue number3
StatePublished - Dec 1 1997

Keywords

  • Cyanate esters
  • Molecular weight distribution
  • Polycyclotrimerization
  • Random branching

Fingerprint Dive into the research topics of 'Structure development in cyanate ester polymenzation'. Together they form a unique fingerprint.

Cite this