Recently, biobased polymers have received great interest due to their ecofriendly properties towards environment. As a substitute to the use of conventional reinforcing synthetic resins, biobased resins were synthesized from renewable resource cardanol, the meta- substituted phenolic compound isolated from Cashew nut shell liquid (CNSL), a byproduct of cashew industry. The resins have been synthesized by condensing diazotized-p-sulphanilic acid cardanol dye with formaldehyde, o-amino benzoic acid and thiourea. The resins have been characterized by FT-IR, 1H-NMR and XRD studies. Thermal behavior of the resins has been studied by Thermogravimetric Analysis (TGA) and Differential thermal analysis (DTA). Thermal stability of the resins has been compared by analyzing TG data which provided the kinetic parameter activation energy associated with the thermal decomposition. The DTA and XRD data indicated the percentage of crystallinity associated with the thermal stability of the resins.
