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 may 2022
Accepted
30 iyl 2022
First published
01 avq 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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