Methods for preparing solutions and materials based on the biopolymer fibroin were discussed. Thermal hydrolysis of fibroin at 220-300°C produced a mixture of water-soluble amino acids, dipeptides, and diketopiperazines. The diketopiperazine content increased with increasing hydrolysis temperature. Dissolution of fibroin in ionic liquids formed thixotropic solutions with properties that depended on the dissolution temperature. The ordering of films produced from the solutions depended on the contact time with the precipitant.
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The work was performed under the auspices of a State Task for the RF Ministry of Education and Science (Task No. 2014/186) and was sponsored by the St. Petersburg Administration Committee on Science and Higher Education (2015 grant for scientific and scientific-technical activities).
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Translated from Khimicheskie Volokna, No. 4, pp. 34–39, July—August, 2015.
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Sashina, E.S., Golubikhin, A.Y. & Susanin, A.I. Prospects for Producing New Biomaterials Based on Fibroin. Fibre Chem 47, 253–259 (2015). https://doi.org/10.1007/s10692-016-9675-8
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DOI: https://doi.org/10.1007/s10692-016-9675-8