Density, Refractive Index, Apparent Specific Volume, and Electrical Conductivity of Aqueous Solutions of Poly(ethylene glycol) 1500 at Different Temperatures

作者：Costa Bernardo de Sa; Garcia Rojas Edwin Elard; dos Reis Coimbra Jane Selia; Teixeira Jose Antonio; Telis Romero Javier

来源：Journal of Chemical and Engineering Data, 2014, 59(2): 339-345.

DOI：10.1021/je400802t

Thermophysical properties of aqueous solutions of poly(ethylene glycol) 1500 g.mol(-1) were measured as a function of polymer concentration w = (0.05, 0.10, 0.15, 0.20 and 0.25) and temperature T/K = (288, 293, 298, 303 and 308). Aqueous systems composed of poly(ethylene glycol) are frequently used in processes involving the separation of biological compounds. The density of the solutions varied from (1001.68 to 1042.65) kg.m(-3), the refractive index ranged from (1.3377 to 1.3681), the apparent specific volume was between (0.8336 and 0.8528) g.cm(-3), and the electrical conductivity varied between (66.22 and 170.29) 10(-3) mS.cm(-1). Polynomial models for the properties as a function of temperature and poly(ethylene glycol) 1500 g.mol(-1) concentration were fitted to the experimental data. Models accounting for combined effects between variables are particularly useful in industrial applications in which physical parameters must be promptly and accurately calculated.

• 出版日期2014-2
• 单位Univ Estadual Paulista