Lactide production from polymer waste

Anzhelika Posvyashchennaya, Tatiana Volgina, Viktor Novikov, Alexey Zinovyev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The method of thermal depolymerization of polylactide wastes and products from it has been studied. At a temperature of 200-250 °C and a pressure of 5-10 mbar the maximum yield of crude lactide and pure lactide is 40% and 5.5% by weight accordingly. The addition of catalysts (Zn, ZnO, SnO, C16H30O4Sn, Sb2O3) in an amount from 0.5 to 2.0% by weight makes it possible to intensify the process and increase the monomer yield by 3-10 times. The maximum amount of lactide (∼60 wt%) is achieved by using tin octoate (1.5 wt%) as the catalyst. The findings product is a mixture that consist of D-, L-lactide (∼80 wt%) and m-lactide (∼4 wt%) isomers, lactic acid (∼2 wt%), oligomer of lactic acid (∼14 wt%), water (<1 wt%), and has a melting point 92-96 °C.

Original languageEnglish
Title of host publicationHigh Technology
Subtitle of host publicationResearch and Applications 2017
EditorsGeorgii E. Osokin, Ekaterina A. Kulinich
PublisherTrans Tech Publications Ltd
Pages17-22
Number of pages6
ISBN (Print)9783035712810
DOIs
Publication statusPublished - 1 Jan 2018
Event6th International Conference for Young Scientists High Technology: Research and Applications, HTRA 2017 - Tomsk, Russian Federation
Duration: 27 Nov 201729 Nov 2017

Publication series

NameKey Engineering Materials
Volume769 KEM
ISSN (Print)1013-9826

Conference

Conference6th International Conference for Young Scientists High Technology: Research and Applications, HTRA 2017
CountryRussian Federation
CityTomsk
Period27.11.1729.11.17

Fingerprint

Lactic acid
Polymers
Depolymerization
Catalysts
Oligomers
Isomers
Tin
Melting point
Monomers
Lactic Acid
Water
Temperature
dilactide
Hot Temperature

Keywords

  • Depolymerization catalysts
  • Lactide production
  • Polylactide
  • Thermal depolymerization

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Posvyashchennaya, A., Volgina, T., Novikov, V., & Zinovyev, A. (2018). Lactide production from polymer waste. In G. E. Osokin, & E. A. Kulinich (Eds.), High Technology: Research and Applications 2017 (pp. 17-22). (Key Engineering Materials; Vol. 769 KEM). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.769.17

Lactide production from polymer waste. / Posvyashchennaya, Anzhelika; Volgina, Tatiana; Novikov, Viktor; Zinovyev, Alexey.

High Technology: Research and Applications 2017. ed. / Georgii E. Osokin; Ekaterina A. Kulinich. Trans Tech Publications Ltd, 2018. p. 17-22 (Key Engineering Materials; Vol. 769 KEM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Posvyashchennaya, A, Volgina, T, Novikov, V & Zinovyev, A 2018, Lactide production from polymer waste. in GE Osokin & EA Kulinich (eds), High Technology: Research and Applications 2017. Key Engineering Materials, vol. 769 KEM, Trans Tech Publications Ltd, pp. 17-22, 6th International Conference for Young Scientists High Technology: Research and Applications, HTRA 2017, Tomsk, Russian Federation, 27.11.17. https://doi.org/10.4028/www.scientific.net/KEM.769.17
Posvyashchennaya A, Volgina T, Novikov V, Zinovyev A. Lactide production from polymer waste. In Osokin GE, Kulinich EA, editors, High Technology: Research and Applications 2017. Trans Tech Publications Ltd. 2018. p. 17-22. (Key Engineering Materials). https://doi.org/10.4028/www.scientific.net/KEM.769.17
Posvyashchennaya, Anzhelika ; Volgina, Tatiana ; Novikov, Viktor ; Zinovyev, Alexey. / Lactide production from polymer waste. High Technology: Research and Applications 2017. editor / Georgii E. Osokin ; Ekaterina A. Kulinich. Trans Tech Publications Ltd, 2018. pp. 17-22 (Key Engineering Materials).
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