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Amino acids grafting of Ar+ ions modified PE

: Svorcik, V.; Hnatowicz, V.; Stopka, P.; Bacáková, L.; Heitz, J.; Öchsner, R.; Ryssel, H.


Radiation physics and chemistry 60 (2001), Nr.1-2, S.89-93
ISSN: 0020-7055
ISSN: 0146-5724
ISSN: 0969-806X
Fraunhofer IIS B ( IISB) ()
ion beam; polymer; grafting; amino acid

Polyethylene (PE) was irradiated with 63 keV Ar+ ions to the fluences from 1×101 2 to 3×1015 cm-2 and then grafted at room temperature from water solution with amino acids (alanine, leucine). Using various spectroscopic techniques (UV-VIS, FTIR, RBS and EPR) it was shown that the amino acids penetrate into PE where they are eventually captured either on double bonds or on free radicals created by the ion irradiation. Grafting with amino acids in the whole specimen layer modified by irradiation is observed. The ion-beam-modified and amino-acid grafted PE is supposed to exhibit increased biocompatibility.