Viscosity measurement in polyethylene glycol-salt-water system

In this study, the change of viscosity with temperature and concentration isinvestigated for polyethylene glycol-salt-water systems. Potassium phosphateand ammonium sulfate salts are used in the systems. Viscosities of polyethyleneglycol-salt-water systems with known concentrations are measured. At 20, 25,30, 35, 40 oC temperatures, viscosity measurements of the systems are done at2,5, 5, 7,5, 10, 12,5, 15, 17,5, 20 % (w/w) concentrations for polyethylene glycol,at 5, 5,9, 6,5, 7,5, 8,2, 9,6, 11, 13 % (w/w) concentrations for potassiumphosphate and at 7,5, 8,5, 8,75, 10,5, 11,5, 12, 13, 14% (w/w) concentrations forammonium sulfate. It is observed that as the temperature increases at constantconcentration, the viscosities decrease and as the concentration at constanttemperature increases, the viscosities increase as well. Viscosities of ternarysystems can be predicted using viscosities of binary systems, and can be used inthe industry.Science Code : 603.03.02Key Words :Viscosity, PEG, Potassium phosphate, AmmoniumsulfatePage Number : 81Adviser : Assoc.Prof. Dr. Ufuk Gündüz Zafer