Vegetable oil based hyperbranched poly(ester amide) (HBPEA) has enormous importance because of
its unique characteristics. Thus the synthesis of HBPEA using N,N
-bis(2-hydroxy ethyl) castor oil fatty
amide, maleic anhydride, phthalic anhydride and isophthalic acid as A2 monomers and diethanol amine,
as B3 monomer was reported for the first time. The chemical structure of the synthesized resin was
characterized by Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H NMR and 13C
NMR) spectroscopic techniques. The degree of branching (DB) (as vouched by 1H NMR analysis) and
initial degradation temperature were found to increase with the increment in B3 monomer content.
Resins with 5 and 10 wt% of B3 monomer showed shear thinning behavior while rheopectic nature of
HBPEA with 15 wt% of B3 content was observed. The evaluation of tensile strength, elongation at break,
abrasion resistance, adhesion strength, scratch hardness, gloss, impact strength and chemical resistance
complemented by microbial and lipolytic degradation forward the epoxy cured thermosets as advanced
biodegradable surface coating materials.