Relationships in a bismaleimide resin system. Part II: Thermomechanical properties

Thomas M. Donnellan, David Roylance

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A range of bismaleimide resins of differing network structure was produced both by varying the ratios of N,N′‐bismaleimido‐4,4′‐diphenylmethane (BMI) and methylene dianiline (MDA), and also by the use of different thermal processing cycles. Characterization of the resins by a variety of mechanical, physical, and micrographic techniques showed that properties such as modulus and yield strength varied directly with crosslink density and its associated free volume. Fracture toughness was found to increase as the crosslink density decreased, and microscopic investigation of the resin fracture surfaces identified characteristics which correlated with the resin fracture toughness.

Original languageEnglish (US)
Pages (from-to)415-420
Number of pages6
JournalPolymer Engineering & Science
Issue number6
StatePublished - Mar 1992

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry


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