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Polymers
Volume 13
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10.3390/polym13162768
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Article

Fully Recyclable Bio-Based Epoxy Formulations Using Epoxidized Precursors from Waste Flour: Thermal and Mechanical Characterization

by
Francesca Ferrari
1,
Carola Esposito Corcione
1,*,
Raffaella Striani
1,
Lorena Saitta
2,
Gianluca Cicala
2 and
Antonio Greco
1
1
Department of Engineering for Innovation, University of Salento, Via Arnesano, 73100 Lecce, Italy
2
Department of Civil Engineering and Architecture (DICAR), University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy
*
Author to whom correspondence should be addressed.
Polymers 2021, 13(16), 2768; https://doi.org/10.3390/polym13162768
Submission received: 26 July 2021 / Revised: 12 August 2021 / Accepted: 12 August 2021 / Published: 18 August 2021
(This article belongs to the Special Issue Polymer Biodegradation and Polymeric Biomass Valorization)
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Abstract

Organic wastes represent an increasing pollution problem due to the exponential growth of their presence in the waste stream. Among these, waste flour cannot be easily reused by transforming it into high-value-added products. Another major problem is represented by epoxy-based thermosets, which have wide use but also poor recyclability. The object of the present paper is, therefore, to analyze both of these problems and come up with innovative solutions. Indeed, we propose a completely new approach, aimed at reusing the organic waste flour, by converting it into high-value epoxy-based thermosets that could be fully recycled into a reusable plastic matrix when added to the waste epoxy-based thermosets. Throughout the research activity, the organic waste was transformed into an epoxidized prepolymer, which was then mixed with a bio-based monomer cured with a cleavable ammine. The latter reactant was based on Recyclamine™ by Connora Technologies, and in this paper, we demonstrate that this original approach could work with the synthetized epoxy prepolymers derived from the waste flour. The cured epoxies were fully characterized in terms of their thermal, rheological, and flexural properties. The results obtained showed optimal recyclability of the new resin developed.
Keywords: epoxidation; thermoset recycling; organic waste epoxidation; thermoset recycling; organic waste
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MDPI and ACS Style

Ferrari, F.; Esposito Corcione, C.; Striani, R.; Saitta, L.; Cicala, G.; Greco, A. Fully Recyclable Bio-Based Epoxy Formulations Using Epoxidized Precursors from Waste Flour: Thermal and Mechanical Characterization. Polymers 2021, 13, 2768. https://doi.org/10.3390/polym13162768

AMA Style

Ferrari F, Esposito Corcione C, Striani R, Saitta L, Cicala G, Greco A. Fully Recyclable Bio-Based Epoxy Formulations Using Epoxidized Precursors from Waste Flour: Thermal and Mechanical Characterization. Polymers. 2021; 13(16):2768. https://doi.org/10.3390/polym13162768

Chicago/Turabian Style

Ferrari, Francesca, Carola Esposito Corcione, Raffaella Striani, Lorena Saitta, Gianluca Cicala, and Antonio Greco. 2021. "Fully Recyclable Bio-Based Epoxy Formulations Using Epoxidized Precursors from Waste Flour: Thermal and Mechanical Characterization" Polymers 13, no. 16: 2768. https://doi.org/10.3390/polym13162768

APA Style

Ferrari, F., Esposito Corcione, C., Striani, R., Saitta, L., Cicala, G., & Greco, A. (2021). Fully Recyclable Bio-Based Epoxy Formulations Using Epoxidized Precursors from Waste Flour: Thermal and Mechanical Characterization. Polymers, 13(16), 2768. https://doi.org/10.3390/polym13162768

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