A FTIR CHARACTERIZATION OF A HEMOCOMPATIBLE MATERIAL OBTAINED BY SWIFT HEAVY-ION RADIATION GRAFTING

In order to prepare materials destined to be used as vascular prothesi s, a radiation grafting of styrene, induced by swift heavy ions in pol yvinylidene fluoride films, was performed. A substitution of the graft ed polystyrene with sulfonate and aspartic acid sulfamide groups, whic h confers to the polymer anticoagulant properties, was achieved. The m aterial was characterized by Fourier Transform Infrared spectroscopy a t each step of the synthesis.