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Divanillin-Based Aromatic Amines: Synthesis and Use as Curing Agents for Fully Vanillin-Based Epoxy Thermosets
Etienne Savonnet1,2, Cedric Le Coz1, Etienne Grau1
1Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, Pessac, France.
Frontiers in Chemistry
|September 27, 2019
Summary
Novel bio-based aromatic diamines were synthesized from vanillin and used as curing agents for epoxy thermosets. These materials show excellent thermomechanical properties, including high glass transition temperature and char residue.
Area of Science:
- Polymer Chemistry
- Materials Science
- Organic Synthesis
Background:
- Epoxy thermosets are widely used in various industries.
- There is a growing demand for sustainable and bio-based materials.
- Vanillin, a renewable resource, can be a precursor for valuable chemicals.
Purpose of the Study:
- To synthesize novel bio-based aromatic diamines from vanillin.
- To evaluate these diamines as curing agents for epoxy thermosets.
- To investigate the thermomechanical properties of the resulting bio-based epoxy thermosets.
Main Methods:
- Synthesis and characterization of methylated divanillylamine (MDVA) and 3,4-dimethoxydianiline (DMAN).
- Formulation and curing of epoxy resins using MDVA and DMAN.
- Thermomechanical analysis (e.g., DSC, TGA) of the cured epoxy thermosets.
Main Results:
- Successful synthesis and characterization of two novel vanillin-derived diamines.
- MDVA and DMAN effectively cured epoxy resins.
- The bio-based epoxy thermosets exhibited high glass transition temperatures and significant char residue, indicating good thermal stability.
Conclusions:
- Vanillin is a viable platform for producing bio-based aromatic diamines.
- These novel diamines are promising curing agents for developing high-performance, sustainable epoxy thermosets.
- The developed materials offer a potential alternative to petroleum-based epoxy systems.
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