硝化纤维素在稀溶液中粘度与浓度的依赖关系

研究了硝化纤维素在稀溶液中的粘度行为。经现硝化纤维素在稀溶液中，当溶液的浓度小于某一值时，某增比浓粘度随溶液浓度的降低而急剧上升。研究表明：这是由于硝化纤维素分子在毛细管器壁上吸附造成的；在稀溶液区的这一转折浓度与高分子溶液的一个临界浓度Ｃｓ相对应，并从理论上定量给出预计这一临界浓度的方法。

Relationship between Viscosity and Concentration of Nitrocellulose

The viscosity properties of nitrocellulose in dilute solution were studied in this parer. The viscosity of nitrocellulose in extremely dilute solution, when the solution concentration is under a value, rose rapidly with the reduction of the solution concentration. The inverstigation shows that the reason is because of the adsorption of nitrocellulose molecular on the wall of capillary, the transitional concentrations in dilute solution area correspond to the critical concentration of polymer solution. The way estimating the critical concentration theoretically was given.