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Degradation of Polylactide—Polyethylene Binary Blends in Soil

  • Macromolecular Compounds and Polymeric Materials
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Abstract

Binary polylactide-low-density polyethylene blends of various compositions were prepared, and their biodegradability in soil and water absorption kinetics at 22 ± 2°C were studied. The degree of water absorption is higher for the blends than for the pure polymers. An IR study shows that the ratio of the optical densities of the bands at 755 and 870 cm−1, related to the crystalline and amorphous phases of polylactide, changes in the course of degradation. The weight loss is higher upon incubation in laboratory soil compared to open soil. Changes in the specimen macrostructure after exposure to soil were demonstrated by optical microscopy.

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Acknowledgments

The study was performed using the devices of the Center of Shared Usage “New Materials and Technologies” of Emanuel Institute of Biochemical Physics, Russian Academy of Sciences.

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Authors and Affiliations

  1. Plekhanov Russian University of Economics, Moscow, 117997, Russia

    M. V. Podzorova

  2. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia

    Yu. V. Tertyshnaya

Authors
  1. M. V. Podzorova
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  2. Yu. V. Tertyshnaya
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Corresponding author

Correspondence to M. V. Podzorova.

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Russian Text © The Author(s), 2019, published in Zhurnal Prikladnoi Khimii, 2019, Vol. 92, No. 6, pp. 737–744.

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The authors declare that they have no conflict of interest.

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Podzorova, M.V., Tertyshnaya, Y.V. Degradation of Polylactide—Polyethylene Binary Blends in Soil. Russ J Appl Chem 92, 767–774 (2019). https://doi.org/10.1134/S1070427219060065

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  • DOI: https://doi.org/10.1134/S1070427219060065

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