Synthesis and Characterization New Polyurethane Membrane From Hydroxylated Rubber Seed Oil

New polyurethane membrane from hydroxylated rubber seed oil has been prepared in this study. Hydroxylated process of rubber seed oil improved 135.30% of hydroxyl number and decreased 73.91% of iodine number of rubber seed oil. Optimum polyurethane membrane was obtained at the composition of hydroxylated rubber seed oil: hexamethylene-1,6-diisocyanate was 5: 7 v/w. The membrane was homogeneous, dry, smooth, slightly stiff and brownish yellow. The clean water flux and rejection factor of the membrane were 0,544L /m(2). h. bar and 98.86%, respectively. FTIR spectra indicated the formation of urethane bond (N-H at 3308 cm(-1)). Thermal analysis showed two stages of decomposition at 223 degrees C and 386 degrees C. The membrane exhibited a strong and elastic properties with a tensile strength of 1.13 kgf/mm(2) and elongation 215.36%.