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Вид документа : Статья из журнала
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Автор(ы) : Sukhanova A., Boyandin A. N., Ertiletskaya N., Simunin M., Shalygina T., Voronin A., Vasiliev A. D., Nemtsev I., Volochaev M. N., Pyatina S.
Заглавие : Study of the effect of modified aluminum oxide nanofibers on the properties of PLA-based films
Место публикации : Materials. - 2022. - Vol. 15, Is. 17. - Ст.6097. - ISSN 19961944 (ISSN), DOI 10.3390/ma15176097
Примечания : Cited References: 37. - This research was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation for the implementation of the project “Development of multifunctional smart materials and structures based on modified polymer composite materials capable to function in extreme conditions” (project number FEFE-2020-0015)
Аннотация: To find out whether Al2O3 nanofiller is effective in improving the characteristics of polymer composites, composite polymer films based on biodegradable polylactide and epoxidized aluminum oxide nanofibers were obtained by solution casting. Surface morphology, mechanical and thermal properties of composites were studied by SEM, IR-Fourier spectroscopy, DSC and DMA. It was shown that, below and above the percolation threshold, the properties of the films differ significantly. The inclusion of alumina nanoparticles up to 0.2% leads to a plasticizing effect, a decrease in the crystallization temperature and the melting enthalpy and an increase in the tensile stress. An increase in the content of alumina nanoparticles in films above the percolation threshold (0.5%) leads to a decrease in the crystallinity of the films, an increase in stiffness and a drop in elasticity. Finding the percolation threshold of alumina nanoparticles in PLA films makes it possible to control their properties and create materials for various applications. The results of this study may have major significance for the commercial use of aluminum oxide nanofibers and can broaden the research field of composites.
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