Analysis of the kinetics and mechanism of the cure of a bismaleimide-diamine thermoset

Hopewell, JL, George, GA and Hill, DJT (2000) Analysis of the kinetics and mechanism of the cure of a bismaleimide-diamine thermoset. Polymer, 41 23: 8231-8239.


Author Hopewell, JL
George, GA
Hill, DJT
Title Analysis of the kinetics and mechanism of the cure of a bismaleimide-diamine thermoset
Journal name Polymer   Check publisher's open access policy
ISSN 0032-3861
Publication date 2000-11
Sub-type Article (original research)
DOI 10.1016/S0032-3861(00)00193-2
Volume 41
Issue 23
Start page 8231
End page 8239
Total pages 9
Place of publication London, UK
Publisher Elsevier Science
Collection year 2000
Language eng
Subject C1
Abstract The polymerisation kinetics of 1,1'-(methylenedi-1,4-phenylene)bismaleimide (MDP-BMI) with the aromatic diamine 1,1'-diaminodiphenylmethane (DDM) has been investigated. Fourier-transform near infrared (FT-NIR) spectroscopy was used to obtain quantitative data for the various functional groups in BMI/DDM mixtures with respect to time during isothermal cure over the temperature range 160-180 degrees C. Quantitative rate data were obtained for all the functional groups in the resins by mathematical differentiation of the time dependence of the concentrations. A mechanism for the polymerisation has been deduced from this rate data, in which the rate-determining step was found to involve a reaction between the primary or secondary amine and a hydrogen bonded complex formed between the maleimide and amine groups. The rare coefficients for the reaction of the amines with the complex were found to be four times larger for the primary amine than that for the secondary amine. The activation energy for the cure over this temperature range was found to be 43 kJ mol(-1). (C) 2000 Elsevier Science Ltd. All rights reserved.
Keyword Polymer Science
Bismaleimide-amine
Thermosets
Polymerisation Kinetics
Aromatic Diamines
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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