Publikasjoner og ansvarsområder
Status of the Nordic Region
Nanorheology of adsorbed polymer chains immersed in pure solvent
Long linear chains of polybutadiene are adsorbed on the two surfaces of a surface force apparatus and immersed in pure tetradecane. The hydrodynamic force was measured by drainage experiments and by frequency sweeps at constant distances. We related the hydrodynamic thickness to the chain dimension....
Corrosion protecting coating systems in Arctic areas
Summary Various properties of five protective coating systems have been investigated under arctic conditions. Arctic conditions have been defined as temperatures down to 60°C. Ageing resistance testing according to ISO 20340 with -60°C in the freezer instead of the specified -20°C showed accept...
Physics of Trapped Macromolecular Chains from Surface Force Apparatus Dynamic Measurements
We present experimental data of the rheological behavior of a polymer melt in a confined state. The polymer is adsorbed on the surfaces of the cell of a dynamic surface force apparatus. We analyze the variations of the zero-shear viscosity and the steady-state compliance with the separation of the s...