Studies on novel interpenetrating networks of urethane modified poly(ester-amide) and vinyl ester of bisphenol-C

Bisphthalamic acids were prepared by reaction of maleic anhydride and aromatic diamines. Novel poly(ester-amide)s (PEAs) were prepared by reaction of DGEBF with bisphthalamic acids. Acrylation of PEAs was carried out using acryloyl chloride; products are called acrylated poly(ester-amide)s (APEAs). Epoxy resin based unsaturated poly(ester-amide) resins (UPEAs) can be prepared by many methods but here these were prepared by reported method. These UPEAs were then treated with acryloyl chloride to afford acrylated UPEAs resin (i.e. AUPEAs). Interpenetrating networks of equal proportional urethane modified poly(ester-amide) and acrylated poly(ester-amide) and vinyl ester of biaphenol c (VE) resin were prepared. Urethane modified APEAs and AUPEAs were characterized by elemental analysis, molecular weight was determined by vapor pressure osmometer and by IR spectral study and by thermogravimetry. Based on DSC data in situ glass reinforced composites of the resultant blends have been prepared and characterized for mechanical, electrical and chemical properties. Unreinforced blends were characterized by thermogravimetry (TGA).