Forces between oil drops in polymer-surfactant systems: Linking direct force measurements to microfluidic observations
Emily J Jamieson, Christopher J Fewkes, Joseph D Berry, Raymond R Dagastine
Journal of Colloid and Interface Science | Elsevier | Published : 2019
Hypothesis Linking atomic force microscopy and microfluidics opens up the possibility of probing adhesive interactions between drops in a high-throughput context. A microfluidic device designed to form, and subsequently break-up, chains of drops, where the drop break-up is sensitive to the underlying surface forces between drops, not hydrodynamic drainage forces, would play a key role in developing this link. Experiments Both techniques have been used to quantify the forces between oil drops in the presence of complexes formed with anionic surfactant, sodium dodecylsulphate, and neutral, water soluble polymer, poly(vinylpyrrolidone). Measurement and modelling of the interaction forces betwe..View full abstract
This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). This work was performed in part at the South Australian node of the Australian National Fabrication Facility, a company established under the National Collaborative Research Infrastructure Strategy to provide nano and micro fabrication facilities for Australia's researchers. This work was performed in part in the Materials Characterisation and Fabrication Platform (MCFP) at the University of Melbourne. We thank the Australian Research Council for funding and the PFPC for providing infrastructure support.