Eva Blomberg, Docent
Doktor, Civilingenjör
Kontaktuppgifter
Forskning
The general field of my work is Physical Chemistry with specialisation in Surface and Colloid Chemistry. The main field is intermolecular and surface force and I am doing experimental work on direct force measurements using different surface force techniques, e.g. the interferometric surface force apparatus (SFA), the bimorph surface force apparatus (MASIF) and atomic force microscopy (AFM). Central to my work are also techniques such as ESCA (electron spectroscopy for chemical analysis) to determine surface chemical composition and adsorbed amount, ellipsometry, Langmuir-Blodgett, Wilhelmy plate method and Quartz Crystal Microbalance (QCM) techniques.
Currently my research effort is concerning polyelectrolyte multilayers. Self-assembled polyelectrolyte multilayers (PEMs) have proven to be versatile materials due to the fact that it is possible to incorporate different charged compounds or nanoobjects. The popularity of the method is due to the ability to create highly tailored polymer thin films with a nearly unlimited range of functional groups incorporated within the structure of the film. This fact results in a high application potential in a broad range of different areas of material development. In most of these areas it is of importance to have well-defined films composed of molecules in a specific spatial arrangement with respect to the surface and to each other.
In this research area we mainly focus on the understanding of the mechanism that takes place during formation of supramolecular architectures on solid surfaces and how the molecular architecture can be controlled by carefully varying the physico-chemical conditions during multilayer formation as well as how the structure of the polyelectrolyte influences the assembled layers.
The build-up of the multilayers on hydrophilic surfaces was monitored by employing the Quartz Crystal Microbalance with dissipation technique (QCM-D) and Dual Polarization Interferometry technique (DPI). With QCM the total sensed mass is measured. This mass also includes any solvent trapped within the layers; the change in dissipation gives an indication of the viscoelastic properties of the layers. The DPI is an optical method and will therefore give information about the “dry” mass as well as the thickness and refractive index of the layers. Two different polyelectrolyte systems have been investigated, i) two synthetic polyelectrolytes – the cationic poly(allylamine hydrochloride) (PAH) and the anionic poly(sodium 4-styrenesulfonate) (PSS), and ii) two natural polysaccharides – the cationic chitosan and anionic heparin.
Immobilization of immunoglobulin onto and between layers of polyelectrolytes
Polyelectrolyte multilayers based on naturally occurring components
Polyelectrolyte multilayer build-up using synthetic polyelectrolytes (PAH/PSS)
Urval av nyare publikationer
Macakova L, Nordstierna L,Karlsson G, Blomberg E and Furó I
“Lack of association between a cationic protein and a cationic fluorosurfactant”
Langmuir, 23, 771-775 (2007)
Kaufman ED, Belyea J, Johnson MC, Nicholson ZM, Ricks JL, Shah PK, Bayless M, Pettersson T, Feldötö Z, Blomberg E, Claesson P and Franzen S
“Probing protein adsorption onto mercaptoundecanoic acid stabilized gold nanoparticles and surfaces by quartz crystal microbalance and -Potential measurements”
Langmuir, 23, 6053-6062 (2007)
Macakova L, Blomberg E and Claesson PM
“Effect of adsorbed layer surface roughness on the QCM-D response: Focus on trapped water”
Langmuir, 23, 12436-12444 (2007)
Adhikari A, Claesson P, Pan J, Leygraf C, Dedinaite A and Blomberg E
“Electrochemical behavior and anticorrosion properties of modified polyaniline dispersed in polyvinylacetate coating on carbon steel”
Electrochimica Acta, 53, 4239-4247 (2008)
Blomberg E, Verall R and Claesson PM
“Interactions between adsorbed layers of cationic gemeini surfactants”
Langmuir, 24, 1133-1140 (2008)
Feldötö Z, Varga I, and Blomberg E
“The influence of salt on the structure of polyelectrolyte multilayers”
Submitted for publication
Lundin M, Feldötö Z, and Blomberg E
“Immobilization of immunoglobulin onto and between layers of polyelectrolytes”
Submitted for publication
Lingström, R; Johansson, E, Blomberg E, and Wågberg, L
“The adhesive interaction between Polyelectrolyte Multilayers of Polyallylamine Hydrochloride and Polyacrylic Acid studied using Atomic Force Microscopy (AFM) and Surface Force Apparatus (SFA)”
Submitted for publication
Lundin, M, Solaqa, F and Blomberg, E
“Polyelectrolyte multilayers based on polysaccharides (chitosan and heparin)”
Submitted for publication
Neimert-Andersson K, Blomberg E, Vollhardt D and Somfai P
“Investigation of the influence of surfactants stereochemistry on intermolecular forces in Langmuir monolayers”
Submitted for publication
Lundin, M, Tilton RD and Blomberg, E
“LbL assembly of chitosan and heparin – interdiffusion of chitosan“
Manuscript in preparation
