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Open AccessArticle

Composting of Polylactide Containing Natural Anti-Aging Compounds of Plant Origin

1
Institute of Materials Engineering, Kazimierz Wielki University, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
2
The Łukasiewicz Research Network-Institute for Engineering of Polymer Materials and Dyes, Marii Skłodowskiej-Curie 55, 87-100 Toruń, Poland
3
Centre of Polymer and Carbon Materials of the Polish Academy of Sciences, Marii Curie-Skłodowskiej 34, 41-819 Zabrze, Poland
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(10), 1582; https://doi.org/10.3390/polym11101582
Received: 2 September 2019 / Revised: 25 September 2019 / Accepted: 25 September 2019 / Published: 27 September 2019
(This article belongs to the Special Issue Biobased and Biodegradable Polymers)
The paper presents the effects of biodegradation of polylactide containing natural anti-aging compounds. Polymer containing 0.5; 5 and 10 wt % of coffee, cocoa or cinnamon extracts were subjected to industrial composting for 7, 14, 21 or 28 days. The effect of the composting process on polylactide properties was examined based on visual assessment, scanning electron microscopy, average molecular weight, differential scanning calorimetry, thermogravimetry, and tensile strength. The impact of the tested extracts on the effects of the composting process was compared with the impact of a commercially available anti-aging compound. It was found that the tested extracts in most cases did not adversely affect the effects of the composting process compared to pure polylactide, often resulting in intensification of biodegradation processes. As a result of the composting process, changes in the macro- and microscopic appearance of the samples and a decrease in molecular weight, phase transition temperatures, thermal resistance, and thermal strength were observed on a scale close to or greater than the reference anti-aging compound. View Full-Text
Keywords: polylactide; plant extracts; polyphenols; biodegradation polylactide; plant extracts; polyphenols; biodegradation
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MDPI and ACS Style

Moraczewski, K.; Malinowski, R.; Sikorska, W.; Karasiewicz, T.; Stepczyńska, M.; Jagodziński, B.; Rytlewski, P. Composting of Polylactide Containing Natural Anti-Aging Compounds of Plant Origin. Polymers 2019, 11, 1582.

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