Poly(lactide) Upcycling Approach through Transesterification for Stereolithography 3D Printing
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Date
2024-10-02
Authors
Figalla, Silvestr
Jašek, Vojtěch
Fučík, Jan
Menčík, Přemysl
Přikryl, Radek
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
AMER CHEMICAL SOC
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Abstract
The legislature determines the recycled and waste contents in fabrication processes to ensure more sustainable production. PLA's mechanical recycling and reuse are limited due to the performance decrease caused by thermal or hydrolytic instability. Our concept introduces an upcycling route involving PLA depolymerization using propylene glycol as a reactant, followed by the methacrylation, assuring the liquid systems' curability provided by radical polymerization. PLA-containing curable systems were studied from a rheological and thermomechanical viewpoint. The viscosity levels varied from 33 to 3911 mPa<middle dot>s at 30 degrees C, giving a wide capability potential. The best system reached 2240 MPa storage modulus, 164.1 degrees C glass-transition temperature, and 145.6 degrees C heat-resistant index, competitive values to commercial systems. The printability was verified for all of the systems. Eventually, our concept led to SLA resin production containing PLA waste content up to 51 wt %.
Description
Citation
BIOMACROMOLECULES. 2024, vol. 25, issue 10, p. 6645-6655.
https://pubs.acs.org/doi/full/10.1021/acs.biomac.4c00840
https://pubs.acs.org/doi/full/10.1021/acs.biomac.4c00840
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en