Recyclable thermosets based on modified epoxy-amine network polymers

Anderson, Lynn, Sanders, Edward W. and Unthank, Matthew (2023) Recyclable thermosets based on modified epoxy-amine network polymers. Materials Horizon, 10 (3). pp. 889-898. ISSN 2051-6347

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The development of high performance, recyclable thermoset materials for applications in plastics, composites, coatings and adhesives requires a synthetic approach where recyclability is designed into the molecular structure of the material. This paper describes a single stage process for the creation of materials from simple, low-cost molecular building blocks, where the polymerisation of liquid epoxy resins and aliphatic amines in the presence of an n-butyl diboronic ester, delivers epoxy-amine-dioxazaborocane materials with tunable physical properties including glass transition temperature (Tg). Mechanical (thermal) recycling and reprocessing of the epoxy-amine-dioxazaborocane thermoset is demonstrated, with retention of Young's modulus and ultimate tensile strength. Most notably, an efficient and low-cost process for the chemical recycling, disassembly and dissolution of the thermoset is demonstrated via two complementary processes using either pinacol (diol) or mono-functional phenylboronic ester.

Item Type: Article
Additional Information: Funding information: The author acknowledges Northumbria University for the financial support of this research, Olin Epoxy for supporting the research through the provision of epoxy resins.
Subjects: F100 Chemistry
Department: Faculties > Health and Life Sciences > Applied Sciences
Depositing User: John Coen
Date Deposited: 21 Dec 2022 08:37
Last Modified: 18 May 2023 11:00

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