Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.3390/ma15176097
Ключевые слова: aluminum oxide nanofibers, composite, film, percolation threshold, polylactide, thermal and mechanical properties
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-Показать полностьюFourier 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. © 2022 by the authors.
Выпуск журнала: Vol. 15, Is. 17
Номера страниц: 6097
ISSN журнала: 19961944