Determination of interfacial tension between two immiscible polymers with and without surfactants at the interface

作者：Hu Y T^*

来源：Journal of Colloid and Interface Science, 2008, 319(1): 287-294.

DOI：10.1016/j.jcis.2007.11.049

• drop deformation
• drop retraction
• interfacial tension
• surfactants

A second-order drop deformation method for inferring interfacial tension between two immiscible polymers is proposed and shown to improve the accuracy of tension estimate appreciably. A small step-strain method, which uses a strong flow (capillary number > 1) and short flow time similar to O(0.1 s), is successfully developed to avoid complications caused by the surfactants for surfactant-laden drops. This method is demonstrated to give good tension estimates for a range of viscosity ratios and surface coverage.

• 出版日期2008-3-1