Tailoring the Properties of Diels-Alder Reaction Crosslinked High-performance Thermosets by Different Bismaleimides

A series of Diels-Alder reaction cross-linked thermosets with recyclability and healability were prepared from furan-containing aromatic polyamide and bismaleimides with different chemical structures. The structures of synthesized bismaleimides were confirmed by 1 H nuclear magnetic resonance ( 1 H-...

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Published inChinese journal of polymer science Vol. 38; no. 3; pp. 268 - 277
Main Authors Luo, Kai-Ju, Huang, Li-Bo, Wang, Yan, Yu, Jun-Rong, Zhu, Jing, Hu, Zu-Ming
Format Journal Article
LanguageEnglish
Published Beijing Chinese Chemical Society and Institute of Chemistry, CAS 01.03.2020
Springer Nature B.V
Subjects
Aramid fibers
Bismaleimides
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crosslinking
Design for recycling
Diels-Alder reactions
Dynamic mechanical analysis
Industrial Chemistry/Chemical Engineering
Mechanical properties
NMR
Nuclear magnetic resonance
Organic chemistry
Polyamide resins
Polymer Sciences
Recyclability
Sol-gel processes
Tensile tests
Thermodynamic properties
Thermosets
Diels-Alder reaction
Reparability
Recyclability
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Summary:A series of Diels-Alder reaction cross-linked thermosets with recyclability and healability were prepared from furan-containing aromatic polyamide and bismaleimides with different chemical structures. The structures of synthesized bismaleimides were confirmed by 1 H nuclear magnetic resonance ( 1 H-NMR) spectroscopy; their reversible cross-linking with the furanic polyamide was further detected by 1 H-NMR technique and sol-gel transition behavior. The dynamic mechanical analysis and tensile test revealed the variable thermal and mechanical properties of thermosets cross-linked by different bismaleimides and with different molar ratios of maleimide group to furan group ( I ma/fur ). The tensile test also demonstrated that the better recyclability and solvent-assisted healability of thermosets cross-linked could be achieved by more flexible bismaleimides. This work is expected to provide valuable information for design of recyclable and healable high-performance thermosets with desired properties.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-019-2328-7