Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres
The relevance of the study is conditioned by the fact that increased consumption of synthetic polymers leads to an increase in environmental pollution due to the long decomposition time of plastic waste. As a result, it is necessary to develop polymer composites based on a biodegradable polymer matr...
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doaj-448179dfee9b4ca1ba8d5ab7573cedc52021-08-04T21:08:18ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282021-08-0113S15916710.13111/2066-8201.2021.13.S.15Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheresArtur A. PSYANCHIN0Elena M. ZAKHAROVA1Aigiz G. KHUSNULLIN2Vadim P. ZAKHAROV3Department of High Molecular Compound and General Chemical Technology, Bashkir State University, 32 Zaki Validi Str., 450076, Ufa, Russian Federation, artps96@yandex.ruDepartment of High Molecular Compound and General Chemical Technology, Bashkir State University, 32 Zaki Validi Str., 450076, Ufa, Russian Federation, lena991999@mail.ruDepartment of High Molecular Compound and General Chemical Technology, Bashkir State University, 32 Zaki Validi Str., 450076, Ufa, Russian Federation, aygiz.husnullin@yandex.ruUfa Federal Research Centre of the Russian Academy of Sciences, 71 Oktyabrya Ave., 450054, Ufa, Russian Federation, zaharovvp@mail.ruThe relevance of the study is conditioned by the fact that increased consumption of synthetic polymers leads to an increase in environmental pollution due to the long decomposition time of plastic waste. As a result, it is necessary to develop polymer composites based on a biodegradable polymer matrix, and to improve the performance properties of finished plastic products, it is necessary to purposefully select cheap and affordable inorganic fillers. Thus, the purpose of this study is to investigate the regularities in the generation of a spatially structured polymer matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres (ASM). The leading approach to the given problem is to melt polymer composites of various compositions and to determine the physical, mechanical, and thermophysical characteristics of the prototypes, including the supermolecular structure of the polymer matrix under the influence of ultraviolet irradiation. The study suggests that the filling of polylactide with ASM particles leads to an increase in the elastic modulus, a decrease in the strength at static rupture and resistance to dynamic destructive effects, as well as heat resistance. Small aluminosilicate microspheres, when added to polylactide, perform the function of nucleation and, even with a small content, increase the crystallinity degree by 3.7 percentage points. In the range of ASM content from 1 pph to 10 pph, the absolute value of the crystallinity degree practically does not depend on the filler concentration in the polymer composite. UV (ultraviolet) irradiation in the presence of air oxygen initiates the thermooxidative destruction of polylactide and leads to the establishment of a spatially structured polymer phase using the electrostatic intermolecular interaction of additionally formed oxygen-containing functional groups in macrochains, as well as partial intermolecular crosslinking during recombination of macroradicals. The establishment of spatial structures in the polymer matrix under UV irradiation determines an increase in the resistance of experimental samples to thermal effects. It is manifested in an increase in the bending temperature under load by 7-10 percentage points, a decrease in the crystallinity degree by 1.2-2.6 percentage points, a decrease in the fluidity of the meltage and also an increase in the glass transition and melting temperature. The materials of the study are of practical value for the development of biodegradable composites based on polylactide filled with inorganic components.https://bulletin.incas.ro/files/psyanchin__all__vol_13_special_issue.pdfpolylactidealuminosilicate microspherebreaking strengthcrystallinityimpact strength |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Artur A. PSYANCHIN Elena M. ZAKHAROVA Aigiz G. KHUSNULLIN Vadim P. ZAKHAROV |
spellingShingle |
Artur A. PSYANCHIN Elena M. ZAKHAROVA Aigiz G. KHUSNULLIN Vadim P. ZAKHAROV Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres INCAS Bulletin polylactide aluminosilicate microsphere breaking strength crystallinity impact strength |
author_facet |
Artur A. PSYANCHIN Elena M. ZAKHAROVA Aigiz G. KHUSNULLIN Vadim P. ZAKHAROV |
author_sort |
Artur A. PSYANCHIN |
title |
Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres |
title_short |
Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres |
title_full |
Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres |
title_fullStr |
Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres |
title_full_unstemmed |
Development of a spatially structured polymeric matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres |
title_sort |
development of a spatially structured polymeric matrix under uv irradiation of polylactide-based composites filled with aluminosilicate microspheres |
publisher |
National Institute for Aerospace Research “Elie Carafoli” - INCAS |
series |
INCAS Bulletin |
issn |
2066-8201 2247-4528 |
publishDate |
2021-08-01 |
description |
The relevance of the study is conditioned by the fact that increased consumption of synthetic polymers leads to an increase in environmental pollution due to the long decomposition time of plastic waste. As a result, it is necessary to develop polymer composites based on a biodegradable polymer matrix, and to improve the performance properties of finished plastic products, it is necessary to purposefully select cheap and affordable inorganic fillers. Thus, the purpose of this study is to investigate the regularities in the generation of a spatially structured polymer matrix under UV irradiation of polylactide-based composites filled with aluminosilicate microspheres (ASM). The leading approach to the given problem is to melt polymer composites of various compositions and to determine the physical, mechanical, and thermophysical characteristics of the prototypes, including the supermolecular structure of the polymer matrix under the influence of ultraviolet irradiation. The study suggests that the filling of polylactide with ASM particles leads to an increase in the elastic modulus, a decrease in the strength at static rupture and resistance to dynamic destructive effects, as well as heat resistance. Small aluminosilicate microspheres, when added to polylactide, perform the function of nucleation and, even with a small content, increase the crystallinity degree by 3.7 percentage points. In the range of ASM content from 1 pph to 10 pph, the absolute value of the crystallinity degree practically does not depend on the filler concentration in the polymer composite. UV (ultraviolet) irradiation in the presence of air oxygen initiates the thermooxidative destruction of polylactide and leads to the establishment of a spatially structured polymer phase using the electrostatic intermolecular interaction of additionally formed oxygen-containing functional groups in macrochains, as well as partial intermolecular crosslinking during recombination of macroradicals. The establishment of spatial structures in the polymer matrix under UV irradiation determines an increase in the resistance of experimental samples to thermal effects. It is manifested in an increase in the bending temperature under load by 7-10 percentage points, a decrease in the crystallinity degree by 1.2-2.6 percentage points, a decrease in the fluidity of the meltage and also an increase in the glass transition and melting temperature. The materials of the study are of practical value for the development of biodegradable composites based on polylactide filled with inorganic components. |
topic |
polylactide aluminosilicate microsphere breaking strength crystallinity impact strength |
url |
https://bulletin.incas.ro/files/psyanchin__all__vol_13_special_issue.pdf |
work_keys_str_mv |
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