Recyclable thermosets based on modified epoxy-amine network polymers.
Mater Horiz
; 10(3): 889-898, 2023 Mar 06.
Article
em En
| MEDLINE
| ID: mdl-36537891
ABSTRACT
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.
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1
Bases de dados:
MEDLINE
Idioma:
En
Revista:
Mater Horiz
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Reino Unido