Contact angles of polyacrylamide aqueous solutions over polyethylene substrate were measured. A wide range of polyacrylamide concentrations from 0 to 1000 g m-3 were covered. Because of the polyelectrolyte feature of polyacrylamide solution, different electrolyte materials were added to the polymer aqueous solutions. NaCl, CaCl2, and AlCl3 in the concentration range of 0-1.0 mol L-1 were added to the polyacrylamide aqueous solutions. The effects of these electrolyte materials on the contact angle and wetting behavior of the polyacrylamide aqueous solutions were investigated.
ASJC Scopus subject areas
- Chemical Engineering(all)