Search for Anomalous Temperature Behavior of the Viscosity of Polyethylene Glycol Solutions

Viscometric studies of polyethylene glycol (PEG 35000) aqueous solutions are presented. The temperature and concentration dependences of the PEG solution viscosities were studied in the range from \(10\,^{\circ }\mathrm{C}\) to \(60\,^{\circ }\mathrm{C}\) and \(5\,\mathrm{mg}{\cdot } \mathrm{ml}^{-1}\) to \(50\, \mathrm{mg}{\cdot } \mathrm{ml}^{-1}\) , respectively. The intrinsic viscosity and the Huggins coefficient have been calculated from the data. The results exclude the recently reported anomalous behavior of these quantities. The measured viscosity is also used to estimate the hydrodynamic and gyration radii of the polymers.