Preparation and properties of functional polyurethane foam used to separate proteins

A kind of functional polyurethane foam was prepared by means of modified PAM,TDI and polyether as main materials by one step bubble method.The production was characterized by scanning electron microscopy(SEM)and Fourier transform infrared spectroscopy(FT-IR).The foam was used to separate the proteins mixture(Lys and BSA).The results showed that when the formula of functional polyurethane foam is as follows: the mass ratio among polyether,TDI,PAM,acetone,TEDA,DBTDL,Si and H2O,is 100∶150∶25∶20∶0.6∶0.4∶1∶0.1,the foam's swelling capacity and the solution-loss rate in water is measured to be 18% and 0.036%,respectively.The foam has acylamide,and can separate the mixed proteins well.