Lightweight Filled Epoxy Resins for Timber Restoration

Wiegand, Torben; Osburg, Andrea

doi:10.1007/978-3-319-78175-4_18

Cited by 1 publication

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“…The use of epoxy resins in a wide variety of applications, such as coatings, polymer concrete and infrastructure constructions, is becoming increasingly important [ 1 , 2 , 3 ]. In addition, fundamental studies on curing behavior and network formation of epoxy resins are still the subjects of current research [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

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

Wiegand

Osburg

2023

Polymers

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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 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.

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