Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins

Functionalized green tea tannins as phenolic prepolymers for bio-based epoxy resins

Author: Sofia Benyahya and Chahinez Aouf and Sylvain Caillol and Bernard Boutevin and Jean Pierre Pascault and Hélène Fulcrand

Phenolic extract from the green tea leaves was used for the production of thermoset epoxy resins. The commercial green tea extract (GTE) was functionalized by the reaction with epichlorohydrin in the presence of phase transfer catalyst. The glycidyl ether derivative of the green tea extract (GEGTE) obtained with a good yield was cured in epoxy polymer with isophorone diamine (IPD) and the resulting network was compared to catechin-IPD and diglycidyl ether of bisphenol A (DGEBA-IPD) systems. The thermal and mechanical analyses of this bio-based epoxy polymer showed its high reactivity associated with a high crosslinking density (Tg: 140–190 °C), a high thermal resistance and interesting mechanical properties.

 

 

Get the whole article here

Shipping Icon Free Shipping + Free Returns
Subscription Details Icon
We stand behind our teas and teaware, and want you to be not just satisfied with them, but thrilled. If for any reason you're not, just let us know and we'll do our best to make it right.

{property.value} {property.value} {property.value} Include jar: {property.value}
×
You definitely need tools!
Perfect coldbrew everytime
The ideal way to store your matcha
The ideal way to store your matcha