Cited by 181biodegradable polymer synthesis and propertiesCarbon dioxide utilization in catalysisPolymer crystallization and properties

Solvothermal Alcoholysis Routes for Recycling Polylactide Waste as Lactic Acid Esters

Petrus, Rafał, Bykowski, Dominik, Sobota, Piotr·2016·ACS Catalysis

Abstract

In this work, we investigated the possible use of polylactide (PLA), a biodegradable polymer obtained from renewable biofeedstock, to produce a range of industrially useful lactic acid esters. We describe a simple and convenient solvothermal alcoholysis method for large-scale recycling of PLA resins or residues from disposable packaging in the presence of the appropriate alcohol under catalyst-free or catalytic conditions. This process proceeds easily both without and with a catalyst. The results show that the best catalytic activities involve magnesium and calcium alkoxides synthesized in situ from organometallic or metallic precursors and an alcohol. We determined the crystal structure of the chiral mononuclear postcatalyst [Ca(LAc) 2 (EL) 2 ] ( 1; LAc = lactic acid anion, EL = ethyl lactate), obtained directly from the reactor. Particular emphasis is placed on the operating conditions and high activity of the catalyst used. Key factors that affect the catalytic activity and reaction mechanism are also highlighted.

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Crossref · 10.1021/acscatal.6b01009

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64 of 64 references verified0 citation errors · 0 not checkable

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  • The presence of catalyst enables milder reaction conditions and among the screened metal catalysts, magnesium and calcium alkoxides generated in situ from the metallic precursors and alcohols gave the best yields (>90%) and negligible epimerization.

    “The presence of catalyst enables milder reaction conditions and among the screened metal catalysts, magnesium and calcium alkoxides generated in situ from the metallic precursors and alcohols gave the best yields (>90%) and negligible epimerization.”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [440]

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Authors
Petrus, R., Bykowski, D., & Sobota, P.
Affiliations
University of Wrocław (PL)
Corresponding author
Sobota, Piotr
Venue
ACS Catalysis
Published
2016-07-12
Volume
6
Issue
8
Pages
5222-5235
ISSN
2155-5435 (ISSN-L)
OpenAlex
W2467604457
Cited by
181
References
64
Citations by year
2026: 45 · 2025: 23 · 2024: 22 · 2023: 18 · 2022: 16 · 2021: 16 · 2020: 17 · 2019: 15 · 2018: 6 · 2017: 3
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
ACS Catalysis (publishedVersion)
Funders
  • Narodowe Centrum Nauki (2014/B/ST5/01512)
  • European Regional Development Fund (POIG.01.01.02-02-003/08)
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
Keywords
polylactic acid, lactic acid esters, alcoholysis, solvothermal synthesis, polymer recycling, disposable packaging, magnesium alkoxides, crystal structure, reaction mechanism, catalyst-free conditions

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