Photooxidation and thermooxidation of PLA as a function of its stereochemistry

Aleksander Hejna; Mateusz Barczewski; Sandra Paszkiewicz; Jacek Andrzejewski; Joanna Aniśko

Scientific Information System of the Poznań University of Technology

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Title

Photooxidation and thermooxidation of PLA as a function of its stereochemistry

Authors

Aleksander Hejna (WIM) ^{[ 1 ][ 2.9 ][ P ]}
Mateusz Barczewski (WIM) ^{[ 1 ][ 2.8 ][ P ]}
Sandra Paszkiewicz
Jacek Andrzejewski (WIM) ^{[ 1 ][ 2.9 ][ P ]}
Joanna Aniśko (WIM) ^{[ 2 ][ 2.9 ][ SzD ]}

^{[ 1 ]} Instytut Technologii Materiałów, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | ^{[ 2 ]} Wydział Inżynierii Mechanicznej, Politechnika Poznańska | ^{[ P ]} employee | ^{[ SzD ]} doctoral school student

Scientific discipline (Law 2.0)

[2.8] Materials engineering
[2.9] Mechanical engineering

Year of publication

2024

Document type

paper

Publication language

english

Abstract

EN Polylactide (PLA) is the most commonly used bioplastic. Its performance is driven by the L- and D-isomers' content, which strongly a@ects the crystallinity, inducing variations in processing, solubility, thermal or mechanical performance, and degradation rate. The impact of PLA chirality on biodegradation has been repeatedly investigated due to the environmentally friendly character of this polymer. However, despite PLA's susceptibility to oxidative degradation and its importance in multiple applications, its correlation with the content of particular isomers has been so far overlooked. Reported studies dealing with this phenomenon are predominantly based on one PLA grade despite the indisputably significant impact of its structure and di@er with applied oxidation conditions. Herein, photooxidation and thermooxidation of PLA grades di@ering with L- and D-isomer content were evaluated under the same conditions, providing clear and straightforward information about this material.

URL

https://static1.squarespace.com/static/62c326b96a09b762cf8302ac/t/667e8cd4578728784d3601c9/1719569633844/AbstractBook-MACRO2024Final.pdf

Source name

IUPAC MACRO2024 : 50th World Polymer Conference : Abstract Book, 1st-4th of July University of Warwick

Date of publication

2024

Number of pages

206

Presented on

50th World Polymer Conference IUPAC MACRO 2024, 1-4.07.2024, Warwick, United Kingdom

License type

CC BY (attribution alone)