Solid-state 13C-NMR study on bismaleimide/diamine polymerization: Structure, control of particle size, and mechanical properties

Bismaleimide polymers (BMI) are known for their good thermal stability and are used in a temperature range of 200–250°C, but they are brittle. New generations of BMIs with added comonomers or elastomers are less fragile. During the polymerization, the main reactions involved are the Michael's r...

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Bibliographic Details
Published in:Journal of applied polymer science 2000-12, Vol.78 (13), p.2379-2388
Main Authors: Regnier, N., Fayos, M., Lafontaine, E.
Format: Article
Language:English
Subjects:
13C-NMR
Applied sciences
bismaleimide
Chemical properties
Exact sciences and technology
mechanical properties
morphology
Polymer industry, paints, wood
polymerization kinetics
Properties and testing
Technology of polymers
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Summary:Bismaleimide polymers (BMI) are known for their good thermal stability and are used in a temperature range of 200–250°C, but they are brittle. New generations of BMIs with added comonomers or elastomers are less fragile. During the polymerization, the main reactions involved are the Michael's reaction (addition of a BMI with an aromatic diamine) and the ene reaction. Because the chemical structure of the network is dependent on the temperature, the reaction kinetics as a function of the thermal cycles of processing are compared using solid‐phase 13C‐NMR. The morphology of the two‐phase structure and the mechanical properties (KIC) are also studied. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2379–2388, 2000
ISSN:0021-8995
1097-4628
DOI:10.1002/1097-4628(20001220)78:13<2379::AID-APP150>3.0.CO;2-L