International. In a study published by researchers at the Institut Charles Gerhardt Montpellier in France, two types of bio-based mixtures were used to improve the properties of epoxy networks.
Commercial Epoxidized Cardanol, Cashew Shell Liquid (CNSL) is a bio-based reagent with an interesting aromatic structure. Cured with two different amines, isophorone diamine and Jeffamine T403, the materials exhibit good properties but not enough to replace bisphenol A diglyniléter (BADGE) in epoxy networks.
As for the interesting properties for coating applications, two types of sucrose epoxy derivatives, sorbitol and isosorbide, were used as mixtures to improve the properties of epoxy materials derived from cardanol.
These epoxy networks with different proportions were characterized by thermogravimetric analysis and differential scanning calorimetry; its hardness and shine were measured, as well as its resistance to chemical solvents. The result left bio-based epoxy mixtures that exhibit interesting properties for coating applications.
The study was published under the name Progress in Organic Coatings.
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