New aromatic amine based on cardanol giving new biobased epoxy networks with cardanol

Abstract

Cardanol, derived from cashew nut shell liquid, was functionalized by thiol-ene coupling with cysteamine to yield a new biobased aromatic amine. This cardanol amine was compared to the commercial cardanol-based phenalkamines. These amines were characterized by NMR spectrometry and used as epoxy hardeners. The formulations of these amines with epoxidized cardanol in stoichiometric ratio were characterized by differential scanning calorimetry (DSC), thermogravimetry (TGA), dynamic mechanical (DMA) analyses and exhibit interesting properties for coating applications.