Thermally Remendable Polyurethane Network Cross-Linked via Reversible Diels-Alder Reaction
| Autor: | Alexander V. Polezhaev, A. V. Shapagin, Alexander A. Pavlov, Islam Chechenov, V. I. Solodilov, Elena O. Platonova, Egor Afanasyev |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics polyurethanes Organic chemistry Diphenylmethane General Chemistry Polymer Nuclear magnetic resonance spectroscopy Article chemistry.chemical_compound Diels–Alder reaction crosslinked polyurethanes recyclability Differential scanning calorimetry QD241-441 chemistry Furan Polymer chemistry Maleimide Polyurethane |
| Zdroj: | Polymers, Vol 13, Iss 1935, p 1935 (2021) Polymers Polymers; Volume 13; Issue 12; Pages: 1935 |
| ISSN: | 2073-4360 |
| Popis: | We prepared a series of thermally remendable and recyclable polyurethanes crosslinked via reversible furan-maleimide Diels–Alder reaction based on TDI end-caped branched Voranol 3138 terminated with difurfurylamine and 4,4′-bis(maleimido)diphenylmethane (BMI). We showed that Young modulus strongly depends on BMI content (from 8 to 250 MPa) that allows us to obtain materials of different elasticity as simple as varying BMI content. The ability of DA and retro-DA reactions between furan and maleimide to reversibly bind material components was investigated by NMR spectroscopy, differential scanning calorimetry, and recycle testing. All polymers obtained demonstrated high strengths and could be recovering without significant loss in mechanical properties for at least five reprocessing cycles. |
| Databáze: | OpenAIRE |
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