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Synthesis and properties of bio-based polyurethane derived from castor oil
C. MEIORIN; T. CALVO; M. A. MOSIEWICKI; M. I. ARANGUEN; M. A. CORCUERA; A. ECEIZA
Encuentro; Polyurethanes 2013 - new trends of development; 2013
Polyurethanes are very versatile polymeric materials with a wide range of physical and chemical properties. The aim of this work was to synthesize bio-based polyurethanes derived from castor oil (commercial polyol) and methylene diphenyl diisocyanate (MDI). The structure of the polyurethanes were varied by means of two different crosslinking agents, glycerol (Gly) and trimethylolpropane (TMP). The synthesis was carried out in bulk and without catalyst via a one-step polymerization varying the Polyol/MDI/Gly or TMP ratio. The effect of the different crosslinking agent and compositions were studied by Fourier transformed infrared spectroscopy (FTIR), dynamic-mechanical analysis (DMA), thermogravimetric analysis (TGA), tensile and Shore D hardness tests.