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用动态方法测量了半透膜对溶剂的透过速率及高聚物溶液的渗透压。膜在较大静压差的作用下所发生的弹性形变和液体在毛细管管壁上的粘附影响测量的复现性,导致了H～dH/dt关系偏离直线,使上升线与下降线不对称。
The permeation rate of the semipermeable membrane and the osmotic pressure of the polymer solution were measured by a dynamic method. The elastic deformation of the membrane under the effect of larger static pressure difference and the adhesion of the liquid on the capillary wall affect the reproducibility of the measurement, resulting in the deviation of the H ~ dH / dt from the straight line so that the rising line and the falling line are not symmetry.