Abstract
Aromatic polyimides used in the anionic polymerization of ε-caprolactam as polyfunctional activators are considered effective reinforcing agents of polycaproamide formed in their presence. It is shown that the nature of polyimide, the rigidity of its macromolecules, makes the dominant contribution to the strength characteristics of copolymers. It is found that molecular composites containing up to 5 wt % of the rigid-chain polyimide have a unique specific impact strength that is several times higher than the corresponding values for both polycaproamide and its copolymers with flexible-chain polyimides.
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ACKNOWLEDGMENTS
We are grateful to E.S. Afanasyev and A.P. Krasnov for the mechanical testing of polymers.
Funding
This study was supported by the Russian Foundation for Basic Research (project no. 18-29-17035 mk). The characterization of the obtained compounds was supported by the Ministry of Science and Higher Education of the Russian Federation using scientific equipment of the Center for Structural Studies of Molecules, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences.
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Zabegaeva, O.N., Chen, G., Fang, X. et al. Influence of the Structure of Polyimide Macromolecules on the Reinforcement of Polycaproamide. Polym. Sci. Ser. B 62, 94–101 (2020). https://doi.org/10.1134/S1560090420020098
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DOI: https://doi.org/10.1134/S1560090420020098