Tributylborane in the synthesis of graft-copolymers of gelatin and acrylamide
| Autor: | Yuliia.L. Kuznetsova, Anna S. Vavilova, Denis V. Lyakaev, L. L. Semenycheva, Alexey V. Markin, Karina S. Sustaeva, A.V. Mitin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
food.ingredient 010405 organic chemistry Organic Chemistry Polyacrylamide Polymer 010402 general chemistry 01 natural sciences Biochemistry Gelatin 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Devitrification food chemistry Acrylamide Polymer chemistry Materials Chemistry Copolymer Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Glass transition |
| Zdroj: | Journal of Organometallic Chemistry. 924:121431 |
| ISSN: | 0022-328X |
| Popis: | Tributylborane in different concentrations was used for synthesis of gelatin and polyacrylamide graft-copolymer. The copolymers were characterized by Fourier transform infrared spectroscopy method (FTIR). The share of the graft polyacrylamide and the molecular weight of the copolymer increases with the alkylborane concentration growth. The polymers under study exhibit a single phase transformation caused by devitrification. Also, the glass transition temperature depends on tributylborane concentration and differs from that the initial homopolymers. It is supposed, that the grafting process occures through the mechanism of reversible inhibition due to active centers formed as a result of gelatin hydroxyl groups borylation. The excess of tributylborane may result the formation of additional radicals source: alkylborane – oxygen system. |
| Databáze: | OpenAIRE |
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