Tailoring the Properties of Diels-Alder Reaction Crosslinked High-performance Thermosets by Different Bismaleimides |
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Authors: | Kai-Ju Luo Li-Bo Huang Yan Wang Jun-Rong Yu Jing Zhu Zu-Ming Hu |
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Affiliation: | State Key Laboratory for Modification of Chemical Fibers and Polymer Materials |
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Abstract: | 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(Ima/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. |
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Keywords: | Recyclability Reparability Thermosets Diels-Alder reaction |
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