International. In a research paper from France, phenolic extract from green tea leaves was used for the production of thermoset epoxy resins.
Commercial green tea extract (GTE) is functionalized by reaction with epichlorohydrin in the presence of the phase transfer catalyst.
During the investigation it was found that the glycidyl ether derivative of green tea extract (GEGTE) obtained with good performance was cured into an epoxy polymer with isophorone diamine (IPD) and the resulting network was compared with catechin-IPD and diglycidyl ether from bisphenol A systems (DGEBA-IPD). Thermal and mechanical analyses of this bio-based epoxy polymer showed its high reactivity associated with a high cross-linking density (Tg: 140-190 ° C), high thermal resistance and interesting mechanical properties.
The study can be found by clicking here
