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Photo-Curing Chitosan-g-N-Methylolacrylamide Compositions: Synthesis and Characterizationстатья
- Авторы: Uspenskii Sergey, Potseleev Vladislav, Svidchenko Eugenia, Goncharuk Galina, Zelenetskii Alexander, Akopova Tatiana
- Журнал: Polysaccharides
- Том: 3
- Номер: 4
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 831
- Последняя страница: 843
- DOI: 10.3390/polysaccharides3040049
- Аннотация: Chitosan is one of the promising compounds for use in various fields of medicine. However,for successful application, materials based on it must be insoluble in water and have specified physicaland mechanical properties. In this work, we studied the interaction of N-methylolacrylamide (NMA)and chitosan upon concentration of the solutions, both under the action of UV radiation and withoutit, which results in curing of the polymer matrix. The main products, proposed mechanisms of thecrosslinking reaction, and the influence of external conditions on these processes have been revealedusing NMR, IR, and UV spectroscopy. It was found that the reaction proceeds along three pathways.The main reactions proceed with the amino groups of chitosan, and the hydroxymethyl and vinylgroups of NMA. Studies have shown that for the formation of insoluble materials based on chitosan,the best content in the initial cast solution is 2 wt% of chitosan at 0.25 wt% concentration of NMA.Films formed from such solutions possessed high strength and deformation characteristics, namelyan elastic modulus of about 1500 GPa, a strength of about 30 MPa, and an elongation at break ofabout 100%.
- Добавил в систему: Поцелеев Владислав Владимирович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | polysaccharides-03-00049.pdf | 3,1 МБ | 18 декабря 2022 [poceleev] |