Study of the mechanism and rate of bismaleimide cure by remote in-situ real time fiber optic near-infrared spectroscopy

Jovan Mijović, Saša Andjelić

Research output: Contribution to journalArticlepeer-review

Abstract

An investigation was carried out on the mechanism and kinetics of cure of a two-component bismaleimide formulation, composed of 4,4′-methylenebis[maleimidobenzene] and 2,2′-diallylbisphenol A. In-situ real time study of the progress of reaction was conducted in the temperature range from 140 to 250°C using remote fiber optic near-infrared spectroscopy. The obtained signal was clean, free of noise, and remarkably reproducible. The principal reaction observed was an alternating copolymerization involving maleimide and allyl double bonds. Maleimide homopolymerization was detected only in the initial stages of reaction at temperatures above 200°C. The extent of self-condensation (or etherification) of hydroxyl groups on the allyl component, which leads to cross-linking, was observed to vary with reaction temperature, suggesting a path to tailor-making networks with desired morphology and physical/ mechanical properties.

Original languageEnglish (US)
Pages (from-to)239-246
Number of pages8
JournalMacromolecules
Volume29
Issue number1
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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