The boundary condition at the air–liquid interface and its effect on film drainage between colliding bubbles

Liu，Bo1; Manica，Rogerio1; Xu，Zhenghe1,2; Liu，Qingxia1

2020-12-01

10.1016/j.cocis.2020.07.003

CURRENT OPINION IN COLLOID & INTERFACE SCIENCE   影响因子和分区

1359-0294

1879-0399

The drainage of thin liquid films between colliding bubbles is strongly influenced by the boundary conditions at the air–liquid interface. Theoretically, the interface should not resist any tangential stress (fully mobile) in a clean water system, resulting in very fast film drainage and coalescence between bubbles within milliseconds. In reality, under most experimental and industrial conditions, the presence of impurities or surfactants can immobilize the interface and significantly hinder bubble coalescence by several orders of magnitude. In this opinion, we introduce the recent progress on understanding the boundary conditions at the air–water interface, and how they may affect the outcome of bubble collisions. The transition from mobile to immobile boundary conditions in the presence of contaminations is discussed. Despite the considerable recent progress, there are still experimental and theoretical challenges remaining on this topic, for example, finding the mechanism for hindered bubble coalescence by high salt concentrations.

Air–water interface mobility Bubble coalescence Mobile and immobile boundary conditions Salt Surfactant Thin film drainage

SCI ; EI

英语

其他

Chemistry

Chemistry, Physical

WOS:000600601300001

ELSEVIER SCIENCE LONDON

20203609149160

Phase interfaces ; Liquid films ; Surface active agents ; Coalescence ; Thin films

Colloid Chemistry:801.3 ; Physical Chemistry:801.4 ; Chemical Agents and Basic Industrial Chemicals:803

CHEMISTRY

2-s2.0-85090209835

Scopus

1.Department of Chemical and Materials Engineering,University of Alberta,Edmonton,T6G 1H9,Canada
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Liu，Bo,Manica，Rogerio,Xu，Zhenghe,等. The boundary condition at the air–liquid interface and its effect on film drainage between colliding bubbles[J]. CURRENT OPINION IN COLLOID & INTERFACE SCIENCE,2020,50.

Liu，Bo,Manica，Rogerio,Xu，Zhenghe,&Liu，Qingxia.(2020).The boundary condition at the air–liquid interface and its effect on film drainage between colliding bubbles.CURRENT OPINION IN COLLOID & INTERFACE SCIENCE,50.

Liu，Bo,et al."The boundary condition at the air–liquid interface and its effect on film drainage between colliding bubbles".CURRENT OPINION IN COLLOID & INTERFACE SCIENCE 50(2020).