The process of adsorption of human serum albumin has been studied for poly-hydroxy-methylsiloxane and polyethplene-terephtalate surfaces modified by 5 keV Ar+ irradiation. The adsorption kinetics of albumin has been investigated as a function of the modifications induced by irradiation of the two polymer surfaces. Fluorescence spectroscopy, X-ray photoelectron spectroscopy and contact angle technique, respectively, have been used to determine the adsorption kinetics and to characterize the chemical composition and the surface free energy of the irradiated surfaces. Two basic classes of adsorption kinetics were found in connection with two different adsorption mechanisms. The irradiation-induced effects have been seen to be able to change the type of the adsorption process from one class to the other one as a function of the total surface free energy modification. (C) 2000 Elsevier Science B.V. All rights reserved.
|Titolo:||Study of albumin adsorption on ion beam irradiated polymer surfaces|
|Data di pubblicazione:||2000|
|Appare nelle tipologie:||1.1 Articolo in rivista|