| 摘要 |
Method for measurement of dynamical surface tension of solutions of surface-active substances (SAS) relates to instrument-making area in direction of physical and colloid chemistry. The invention is realized due to fact that in pneumatic system of the device one sets and measures most possible stable pressure, at that pressure from measuring capillary one forms given number of bubbles, with determination of average value of time interval between those bubbles, after that one decreases pressure in system of the device with keeping it stable during formation of next series of bubbles with larger time intervals between those with account of pressure in system and with calculation of larger average value of time interval between the bubbles, in same way one decreases and stabilizes again and measures pressure in system of the device for other, up to least possible values of pressure, for each of those one forms given number of bubbles with larger time intervals between those, with calculation of average values of those time intervals. Application of the method makes it possible to increase accuracy of measurement of dynamical surface tension of solutions of SAS and to change intervals between bubbles of following series by given value. |
