The effect of alkyd resin composition on the adsorption on calcium carbonate

• In this paper we present adsorption studies of alkyd resins, frequently used in printing inks, on different calcium carbonate surfaces. The adsorption isotherms indicate that the interactions between alkyd resins and precipitated calcium carbonate are strong. Studies of alkyd resins of different composition clearly show the impact of molecular weight as well as oil length on the adsorption strength. The explanations for this are discussed in terms of compatibility with the solvent used in the study and in terms of alkyd resin molecular weight distribution. Finally, we show that adding a dispersant to the calcium carbonate alters the surface properties and that this affects the adsorption of alkyd resins negatively.

Nyckelord

Adsorption

alkyd resins

calcium carbonate

dispersants

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)