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|Title:||Microanalysis of Ar and He Bombarded Biomedical Polymer Films|
|Authors:||MANSO SILVAN MIGUEL; GAGO R.; VALSESIA ANDREA; CLIMENT FONT A.; MARTINEZ DUART J.M.; ROSSI FRANCOIS|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO vol. 257 no. 1-2 p. 496-500|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in Journals|
|Abstract:||Implantations onto polyethyleneglycol, polycaprolactone and polymethylmethacrylate, carried out with Ar and He ions at 25 and 100 KeV with fluences of 5 x10(13) cm-2, have been made with identical ion currents (20 uA) but different sweep areas in order to take into account the effect of the ion flux on the composition and structure of these biopolymers. Vibrational (Fourier transformed infrared spectroscopy), microanalytical (Rutherford backscattering and energy recoil detection) and microscopic techniques (atomic force microscopy) confirm that, even in this low fluence regime, the ion flux effect is responsible of scaled modifications. More interestingly, these techniques indicate that the damage seems to be higher for He. All these factors suggest that He could be preferentially used to engineer biomedical polymers exploiting the tailoring opportunities offered by ion flux effects.|
|JRC Institute:||Institute for Health and Consumer Protection|
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