AbstractA three‐parameter equation is put forward to evaluate the η of polymer solution from a wide range of concentrations, up to a relative viscosity of 100. The equation is tested by viscometric data of polystyrene, poly(vinyl chloride), poly(1‐vinylnaphthalene), poly(2‐vinylnaphthalene), and poly(4‐vinylbiphenyl) at different temperatures and in a variety of solvents including mixed solvents. A statistical method is employed to analyze the experimental data. It is found that the values of ηobtained by the new equation are consistently lower than those derived from the Huggins equation. However, the discrepancy is not more than 3 on average, and it does not affect the values of Mark‐Houwink constants significantly. Other parameters of the equation are al
展开▼
