  Thin films containing casein appear to be a promising material for coatings
used in the medical area to promote biomineralization. alfa- and beta-casein
and poly-L-arginine multilayer films were formed by the layer-by layer
technique and their thickness and mass were analyzed by ellipsometry and quartz
crystal microbalance with dissipation monitoring (QCM-D). We investigated the
effect of the type of casein used for the film formation and of the
polyethyleneimine anchoring layer on the thickness and mass of adsorbed films.
The analysis of the mass of films during their post-treatment with the
solutions of various ionic strength and pH provided the information concerning
films stability, while the XPS elemental analysis confirmed binding of calcium
ions by the casein embedded in the multilayers.
