Journal
SOFT MATTER
Volume 9, Issue 37, Pages 8980-8991Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sm51304a
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Funding
- The Scientific and Technological Research Council of Turkey (TUBITAK) under the project Synthesis of a Superolephobic Surface using Fluoro(meth)acrylate Polymers in Liquid-CO2 Medium (Solvent-Free Process) [MAG-111M458]
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In this study, we investigated the factors affecting the lifetime of liquid marbles placed on a glass surface and floating on water It was found that the particle size, surface free energy and hydrophobicity of the encapsulating microparticles determine the effective surface tension and lifetime of a liquid marble floating on water We formed liquid marbles using ultra-hydrophobic poly(perfluoroalkyl ethyl acrylate) powder with three different particle sizes (8 +/- 1, 20 +/- 2 and 60 +/- 5 mu m) and polytetrafluoroethylene powder (7 +/- 2 mu m). It was found that both the effective surface tension and lifetime of a floating liquid marble increased considerably with the decrease in the particle size of the ultra-hydrophobic poly(perfluoroalkyl ethyl acrylate) powder We also determined that a floating liquid marble had a longer lifetime if the water contact angle of the polymer powder was high and its surface free energy was low by comparing the results of two different powders having very close average particle sizes but different hydrophobicities.
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