Methodology to calculate interfacial tension under electric field using pendent drop profile analysis.

ABSTRACT: In this paper, we present a methodology to calculate interfacial tension of a water-oil interface under an electric field. The Young-Laplace equation, conventionally used to estimate surface/interfacial tension in axisymmetric drop shape analysis (ADSA), is modified to include electrostatic effects. The solution needs normal component of the Maxwell stress at the interface which is calculated separately by solving the Laplace equation for electric potential. The optimized fitting between the resulting theoretical profile and the experimentally obtained profile results into Bond number which is used to calculate the apparent value of interfacial tension. The algorithm can process a large number of drop profiles in one go. The methodology can be applied in the ADSA studies for adsorption dyn

SUBMITTER: Mhatre S 

PROVIDER: S-EPMC6545058 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature