Thermal and X-Ray Diffraction Studies on Interpenetrating Polymer Networks of Soybean Oil-Based Polyurethane and Cardanol-Based Dye

Abstract

The mixed ester polyol (MEP) is obtained from refined soybean oil on treatment with glycerol at 210°C in presence of lithrage. The probable structure of MEP was established by IR spectra. The polyurethane synthesized from MEP and diphenyl methane diisocyanate (DPMDI) with varying NCO:OH ratios were reacted with cardanol-o-aminophenol dye using ethyleneglycol dimethacrylate (EGDM) as a cross-linking agent and benzoyl peroxide as initiator. The PU was thoroughly characterized by IR spectroscopy. The thermal behavior of the Interpenetrating polymer networks was characterized by TG and the Morphology was studied by XRD studies.