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Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation

The results of studies on the uncrosslinked fraction of blends of polylactide and poly(butylene adipate-co-terephthalate) (PLA/PBAT) are presented. The blends were crosslinked by using the electron radiation and triallyl isocyanurate (TAIC) at a concentration of 3 wt %. Two kinds of samples to be in...

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Autores principales: Malinowski, Rafał, Moraczewski, Krzysztof, Raszkowska-Kaczor, Aneta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084477/
https://www.ncbi.nlm.nih.gov/pubmed/32121084
http://dx.doi.org/10.3390/ma13051068
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author Malinowski, Rafał
Moraczewski, Krzysztof
Raszkowska-Kaczor, Aneta
author_facet Malinowski, Rafał
Moraczewski, Krzysztof
Raszkowska-Kaczor, Aneta
author_sort Malinowski, Rafał
collection PubMed
description The results of studies on the uncrosslinked fraction of blends of polylactide and poly(butylene adipate-co-terephthalate) (PLA/PBAT) are presented. The blends were crosslinked by using the electron radiation and triallyl isocyanurate (TAIC) at a concentration of 3 wt %. Two kinds of samples to be investigated were prepared: one contained 80 wt % PLA and the other contained 80 wt % PBAT. Both blends were irradiated with the doses of 10, 40, or 90 kGy. The uncrosslinked fraction was separated from the crosslinked one. When dried, they were subjected to quantitative analysis, Fourier transform infrared spectroscopy (FTIR) measurements, an analysis of variations in the average molecular weight, and the determination of thermal properties. It was found that the electron radiation caused various effects in the studied samples, which depended on the magnitude of the radiation dose and the weight fractions of the components of the particular blends. This was evidenced by the occurrence of the uncrosslinked fractions of different amounts, a different molecular weight distribution, and the different thermal properties of the samples. It was also concluded that the observed effects were caused by the fact that the processes of crosslinking and degradation took place mostly in PLA, while PBAT appeared to be less susceptible to the influence of the electron radiation.
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spelling pubmed-70844772020-03-24 Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation Malinowski, Rafał Moraczewski, Krzysztof Raszkowska-Kaczor, Aneta Materials (Basel) Article The results of studies on the uncrosslinked fraction of blends of polylactide and poly(butylene adipate-co-terephthalate) (PLA/PBAT) are presented. The blends were crosslinked by using the electron radiation and triallyl isocyanurate (TAIC) at a concentration of 3 wt %. Two kinds of samples to be investigated were prepared: one contained 80 wt % PLA and the other contained 80 wt % PBAT. Both blends were irradiated with the doses of 10, 40, or 90 kGy. The uncrosslinked fraction was separated from the crosslinked one. When dried, they were subjected to quantitative analysis, Fourier transform infrared spectroscopy (FTIR) measurements, an analysis of variations in the average molecular weight, and the determination of thermal properties. It was found that the electron radiation caused various effects in the studied samples, which depended on the magnitude of the radiation dose and the weight fractions of the components of the particular blends. This was evidenced by the occurrence of the uncrosslinked fractions of different amounts, a different molecular weight distribution, and the different thermal properties of the samples. It was also concluded that the observed effects were caused by the fact that the processes of crosslinking and degradation took place mostly in PLA, while PBAT appeared to be less susceptible to the influence of the electron radiation. MDPI 2020-02-28 /pmc/articles/PMC7084477/ /pubmed/32121084 http://dx.doi.org/10.3390/ma13051068 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Malinowski, Rafał
Moraczewski, Krzysztof
Raszkowska-Kaczor, Aneta
Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title_full Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title_fullStr Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title_full_unstemmed Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title_short Studies on the Uncrosslinked Fraction of PLA/PBAT Blends Modified by Electron Radiation
title_sort studies on the uncrosslinked fraction of pla/pbat blends modified by electron radiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084477/
https://www.ncbi.nlm.nih.gov/pubmed/32121084
http://dx.doi.org/10.3390/ma13051068
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