Issue 34, 2022

One-shot transformation of ordinary polyesters into vitrimers: decomposition-triggered cross-linking and assistance of dynamic covalent bonds

Abstract

Vitrimers are a new type of cross-linked material showing sustainable functions due to the associative bond exchange nature. In this study, we explore one-shot transformation of ordinary polyesters into vitrimers by only heating the mixture of a polyester, tetra-epoxy compound, and trans-esterification catalyst, where the original polyester does not bear any reactive groups initially. Detailed analyses reveal that three distinct steps of hydrolysis, epoxy-opening, and trans-esterification reactions are involved in the present cross-linking mechanism, which is thus much different from the conventional cross-linking reaction. Consequently, a fully cross-linked vitrimer with a gel fraction of about 100% was obtained.

Graphical abstract: One-shot transformation of ordinary polyesters into vitrimers: decomposition-triggered cross-linking and assistance of dynamic covalent bonds

Supplementary files

Article information

Article type
Communication
Submitted
23 5꜈ 2022
Accepted
30 7꜈ 2022
First published
01 8꜈ 2022

J. Mater. Chem. A, 2022,10, 17406-17414

One-shot transformation of ordinary polyesters into vitrimers: decomposition-triggered cross-linking and assistance of dynamic covalent bonds

T. Kimura and M. Hayashi, J. Mater. Chem. A, 2022, 10, 17406 DOI: 10.1039/D2TA04110C

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