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Biocatalytic strategies for sustainable epoxy polymer degradation and synthesis
Citation Link: https://doi.org/10.15480/882.17448
Publikationstyp
Doctoral Thesis
Date Issued
2026
Sprache
English
Author(s)
Advisor
Referee
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2026-05-22
Institute
TORE-DOI
Citation
Technische Universität Hamburg (2026)
Epoxy resins are widely used for their excellent mechanical properties. In contrast, they pose significant sustainability challenges due to their petrochemical origin and highly crosslinked, non-degradable structure. Within the framework of this dissertation two primary challenges in the context of sustainable epoxy thermosets were addressed. First,the investigation ofthe enzymaticdegradation ofhighly crosslinked epoxy resins cured with aromatic amines. By employing a laccase-mediator system inspired by lignin degradation, the normally inert, densely crosslinked polymer network was rendered susceptible to oxidation. This approach paves the way for a mild, environmentally benign breakdown of an otherwise robust thermoset. Second, a bio-based synthesis route was developed for epoxidized thermoset monomers using the renewable resource linseed oil. Through a chemoenzymatic epoxidation of the unsaturated plant oils, sustainable epoxy precursors were produced as alternatives to conventional petroleum-derived monomers. The purification and curing performance of these monomers were evaluated, demonstrating that fully bio-based epoxy matrices can be achieved. Both strategies share the overarching goal of improving the sustainability of epoxy materials. By addressing end-of-life degradation and the utilization of renewable feedstocks, this work contributes to advancing thermoset polymers with reduced environmental impact.
Subjects
epoxy
composites
biodegradation
biocatalysis
recycling
DDC Class
660: Chemistry; Chemical Engineering
Funding Organisations
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Name
Dissertation_Klose_Leon.pdf
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67.44 MB
Format
Adobe PDF