Investigation of foam drainage using foam pressure drop technique

摘要: Abstract In the present work we have investigated influence of surface shear viscosity and Plateau borders (PBs) radii (R) on drainage rate foam, stabilized with SDS (producing Newton black films) or Triton X-100. foam generated measured agrees that one calculated Nguyen's equation [A.V. Nguyen, Liquid in single border J. Colloid Interface Sci. 249 (2002) 194], when PBs varied from 20 × 10−6 to 85 × 10−6 m. produced X-100 experimental exceeded range R = (20–80) × 10−6 m. We also column height bubbles sizes inner collapse which increase rate. No pressure gradient mobility was found 2–5 times. The exceeds Lemlich’ (i.e. results contradict channel-dominated regime). It shown standard theories Lemlich Nguyen predict values volumetric velocity same as our model independent channels does.