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Modified polypropylene (PP-M) has been obtained in the Institute of Nuclear Research and Technology (INCT). The main component of PP-M is polypropylene MALEN P-J603, produced in Poland, with melt flow index MFR = 8,58 g/10 min (230°C/2, 16 kg). PP-M material can be especially useful for medical application. Radicals which are formed during polypropylene (PP) irradiation have fundamental influence on its properties. Those radicals are located both in crystal and amorphous phase and can be respectively recognized as stable and unstable ones. The radical species formed during the irradiation of the polypropylene has been described on the base of electron spin resonance spectra. Detail investigation of medical quality of PP-M was performed. Chemical (water and hexane extract control), biological (toxicity, sterility, hemolytic properties) and physical (mechanical parameters) properties were investigated and described. |
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