Fully bio-based reprocessable thermosetting resins based on epoxidized vegetable oils cured with itaconic acid

Nowadays, biomass-derived monomers production and thermosets’ recyclability are the two main efforts in the development of sustainable thermosetting epoxy resins to replace fossil derivatives and mitigate landfill build-up and ecological impact. Here, we propose a simple step and benign synthesis st...

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Vydáno v:Industrial crops and products Ročník 185; s. 115116
Hlavní autoři: Di Mauro, Chiara, Genua, Aratz, Mija, Alice
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 01.10.2022
Témata:
calorimetry
carbon
chemical structure
Curing
environmental impact
epoxides
fossils
Fully biobased Epoxy Thermosets
infrared spectroscopy
itaconic acid
landfills
linseed
Reprocessable
soybeans
thermal stability
Thermomechanical properties
transesterification
vegetables
Reprocessable
Curing
Thermomechanical properties
Fully biobased Epoxy Thermosets
ISSN:0926-6690, 1872-633X
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Shrnutí:Nowadays, biomass-derived monomers production and thermosets’ recyclability are the two main efforts in the development of sustainable thermosetting epoxy resins to replace fossil derivatives and mitigate landfill build-up and ecological impact. Here, we propose a simple step and benign synthesis strategy by using the itaconic acid (IA) and two epoxidized vegetable oils (EVOs), linseed and soybean, in order to obtain fully bio-based materials with high carbon bio-content. The reactivity of these formulations, together with the properties of obtained thermosets were investigated and compared with that of DGEBA/IA homologous system. The EVOs/IA reactive mixtures show high reactivity, tested by differential scanning calorimetry (DSC) and Fourier-transformed infrared spectroscopy (FT-IR) while the obtained resins display good mechanical properties, high thermal stability as well as resistance to solvents. Due to the transesterification reaction in the polyester-based networks, recycling abilities tested both mechanically and chemically were proven. The fully reprocessed bio-based thermosets displayed almost unchanged thermomechanical properties and chemical structure combined with a simple and green chemical processing. •Benign processing of epoxidized vegetable oils formulated with itaconic acid.•Fully biobased epoxy thermosets with reprocessable properties.•High thermal, solvent stability and gel content.•A bio-based carbon content and carbon bio-content from 80% to 96.4%.
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ISSN:0926-6690
1872-633X
DOI:10.1016/j.indcrop.2022.115116