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Synthesis, Curing and Thermal Behavior of Amine Hardeners from Potentially Renewable Sources

  • Research into bio-based epoxy resins has intensified in recent decades. Here, it is of great importance to use raw materials whose use does not compete with food production. In addition, the performance of the newly developed materials should be comparable to that of conventional products. Possible starting materials are lignin degradation products, such as vanillin and syringaldehyde, for whichResearch into bio-based epoxy resins has intensified in recent decades. Here, it is of great importance to use raw materials whose use does not compete with food production. In addition, the performance of the newly developed materials should be comparable to that of conventional products. Possible starting materials are lignin degradation products, such as vanillin and syringaldehyde, for which new synthesis routes to the desired products must be found and their properties determined. In this article, the first synthesis of two amine hardeners, starting with vanillin and syringaldehyde, using the Smiles rearrangement reaction is reported. The amine hardeners were mixed with bisphenol A diglycidyl ether, and the curing was compared to isophorone diamine, 4-4′-diaminodiphenyl sulfone, and 4-Aminonbenzylamine by means of differential scanning calorimetry. It was found that the two amines prepared are cold-curing. As TG-MS studies showed, the thermal stability of at least one of the polymers prepared with the potentially bio-based amines is comparable to that of the polymer prepared with isophorone diamine, and similar degradation products are formed during pyrolysis.show moreshow less

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Metadaten
Document Type:Article
Author:Dr. rer.nat. Torben WiegandORCiDGND, Prof. Dr.-Ing. Andrea OsburgORCiDGND
DOI (Cite-Link):https://doi.org/10.3390/polym15040990Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20230524-63745Cite-Link
URL:https://www.mdpi.com/2073-4360/15/4/990
Parent Title (English):Polymers
Publisher:MDPI
Place of publication:Basel
Language:English
Date of Publication (online):2023/05/22
Date of first Publication:2023/02/16
Release Date:2023/05/24
Publishing Institution:Bauhaus-Universität Weimar
Institutes and partner institutions:Fakultät Bauingenieurwesen / Professur Bauchemie und Polymere Werkstoffe
Volume:2023
Issue:volume 15, issue 4, article 990
Pagenumber:12
First Page:1
Last Page:12
Tag:amine hardener; bio-based; curing agent; epoxy; vanillin
GND Keyword:Epoxide; Epoxidharz; Polymere
Dewey Decimal Classification:600 Technik, Medizin, angewandte Wissenschaften / 660 Chemische Verfahrenstechnik
BKL-Classification:56 Bauwesen / 56.45 Baustoffkunde
Open Access Publikationsfonds:Open-Access-Publikationsfonds 2023
Licence (German):License Logo Creative Commons 4.0 - Namensnennung (CC BY 4.0)