title: Surface characterization of dialyzer polymer membranes by imaging ToF-SIMS and quantitative XPS line scans.
abstract: The surfaces of polymeric dialyzer membranes consisting of polysulfone and polyvinylpyrrolidone were investigated regarding the lateral distribution and quantitative surface composition using time-of-flight secondary-ion-mass-spectrometry and x-ray photoelectron spectroscopy. Knowledge of the distribution and composition on the outer surface region is of utmost importance for understanding the biocompatibility of such dialyzer membranes. Both flat membranes and hollow fiber membranes were studied.
authors.affiliation: Division 6.8-Surface Analysis and Interfacial Chemistry, BAM-Federal Institute for Materials Research and Testing, Unter den Eichen 44-46, 12203 Berlin, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Holzweber
authors.affiliation: Division 6.8-Surface Analysis and Interfacial Chemistry, BAM-Federal Institute for Materials Research and Testing, Unter den Eichen 44-46, 12203 Berlin, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Lippitz
authors.affiliation: Institute for Molecular Cardiovascular Research, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany.
authors.forename: Katharina
authors.initials: K
authors.lastname: Krueger
authors.affiliation: Institute for Molecular Cardiovascular Research, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany.
authors.forename: Joachim
authors.initials: J
authors.lastname: Jankowski
authors.affiliation: Division 6.8-Surface Analysis and Interfacial Chemistry, BAM-Federal Institute for Materials Research and Testing, Unter den Eichen 44-46, 12203 Berlin, Germany.
authors.forename: Wolfgang E S
authors.initials: WE
authors.lastname: Unger
mesh_terms: D008566:Membranes / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D011108:Polymers / Q000032:analysis*; D011205:Povidone / Q000032:analysis*; D018629:Spectrometry, Mass, Secondary Ion; D013450:Sulfones / Q000032:analysis*; D013499:Surface Properties
chemical_list: D011108:Polymers; D013450:Sulfones; C017662:polysulfone P 1700; D011205:Povidone