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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hughes, James Whitby, Catherine P. Khairul Anwar, Hunainah |
| Description | Author Affiliation: Whitby CP ( Institute of Fundamental Sciences, Massey University, Palmerston North 4442, New Zealand. Electronic address: C.P.Whitby@massey.ac.nz.); Khairul Anwar H ( Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.); Hughes J ( Ian Wark Research Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.) |
| Abstract | We have investigated how emulsions of water drops coated by organoclay particles destabilise in organic solvents. The drops destabilise and the emulsions undergo a fluid-solid transition if the particles are poorly wetted by the solvent. We show that the drops adhere together and form three-dimensional networks as the fraction of the poor-quality solvent in the mixture increases. Microscopic observations revealed that the drops coalesce into buckled, non-spherical shapes in mixtures rich in poor-quality solvent. A key finding is that destabilisation is favoured under conditions where the energy of adhesion between the particle layers coating drops is comparable to the energy required to detach the particles from the drops. Rupture of the interfacial layer produces particle flocs and uncoated, unstable water drops that settle out of the emulsion. |
| ISSN | 00219797 |
| Journal | Journal of Colloid and Interface Science |
| Volume Number | 465 |
| e-ISSN | 10957103 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-03-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Colloid & Interface Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Colloid and Surface Chemistry Biomaterials Electronic, Optical and Magnetic Materials |
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