Studies of adsorption of polyacrylonitrile and polyacrylates at solid-liquid interface

The adsorption of poly(acrylonitrile), poly(methyl acrylate), poly(ethyl acrylate) and poly(butyl acrylate) was studied at different temperatures fromN,N-dimethyl formamide solution on various solid surfaces, i.e. silica gel, alumina and calcium carbonate. The thermodynamic quantities for adsorption processes were computed by using a) infinite dilution and b) surface coverage approaches. Both procedures tend to give similar conclusions. These reveal the importance of polymer-adsorbent interactions besides many other properties including solvent power.