Gradient dependence of viscosity of cellulose tricarbanilate in tetrahydrofuran

Summary The dependence of viscosity of cellulose tricarbanilate in tetrahydrofuran on the velocity gradient D <2500 s^–1 for molecular weights up to 1.2×10⁶ was determined, and an empirical equation for the determination of the limiting viscosity number for zero velocity gradient was derived. Errors involved in the viscosity determination from a single concentration using an approximate formula were also ascertained.