Nanoparticles at the Polydimethylsiloxane Droplet/Water Interface
Spomenka Simovic A and Clive A. Prestidge A BA Ian Wark Research Institute, University of South Australia, Mawson Lakes SA 5095, Australia.
B Corresponding author. Email: clive.prestidge@unisa.edu.au
Australian Journal of Chemistry 58(9) 664-666 https://doi.org/10.1071/CH05113
Submitted: 11 May 2005 Accepted: 5 July 2005 Published: 21 September 2005
Abstract
The adsorption behaviour of nanoparticles at the polydimethylsiloxane droplet/water interface and the influence of particle hydrophobicity, droplet deformability, and the surface electrical properties of both particles and droplets (as controlled by pH and salt concentration) are reported. Adsorption of hydrophilic nanoparticles is weakly influenced by pH but significantly influenced by salt addition, whereas for hydrophobically modified nanoparticles a balance of hydrophobic and electrostatic forces controls adsorption over a wide range of pH and salt concentrations. The relationships between the adsorbed nanoparticle layer structure, droplet stability, and the oil-to-water transport properties have also been elucidated.
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S. Simovic,
C. A. Prestidge,
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