Issue 9, 2024

Multi-functional syringol based epoxides and properties of their thermoset polymers

Abstract

Lignin-based syringol monomer, 2,6-dimethoxypropylphenol (DMPP), can be upgraded through two synthetic routes to multi-functional propylpyrogallol DMPPO. With three hydroxyl groups, DMPPO can serve as a renewable polymer building block. In this study, we describe the synthesis and characterization of DMPPO epoxide mixtures based on their synthesis methodology; one route uses HBr, another a greener methodology with Nb2O5 catalyst in water. Epoxy thermoset polymers using the two different epoxide preparations are synthesized, characterized, and contrasted. Optimization of reaction conditions, including temperature and catalyst concentration, to enhance the performance of epoxy thermosets is discussed. Through dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA), the thermo-mechanical behavior and thermal stability of the resulting epoxy thermoset networks are evaluated, shedding light on how structural differences impact performance.

Graphical abstract: Multi-functional syringol based epoxides and properties of their thermoset polymers

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Article information

Article type
Paper
Submitted
21 Jun 2024
Accepted
26 Jul 2024
First published
13 Aug 2024
This article is Open Access
Creative Commons BY-NC license

RSC Sustainability, 2024,2, 2684-2692

Multi-functional syringol based epoxides and properties of their thermoset polymers

M. Sanchez, P. C. Ford and M. M. Abu-Omar, RSC Sustainability, 2024, 2, 2684 DOI: 10.1039/D4SU00320A

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