Preparation of monodisperse multiple emulsions at high production rates by multi-stage premix membrane emulsification

By G. Vladisavljević, M. Shimizu, T. Nakashima. 2004

176 citations recorded by the source corpus.

Abstract Multiple W/O/W emulsions have been prepared by multi-stage (repeated) premix membrane emulsification using Shirasu-porous glass (SPG) membrane with a mean pore size of 10.7 μm. A coarse emulsion containing droplets with a mean particle size of about 100 μm was homogenized 5–6 times through the same membrane at a constant pressure difference of 20–300 kPa to achieve additional droplet homogenization and size reduction. The optimum conditions with regard to particle size uniformity were three homogenization cycles at a pressure difference of 100 kPa, under which the mean size of outer W/O particles was 9 μm and the span of particle size distribution was as low as 0.28. The optimum pressure difference in a single-stage process was higher, but the particle size distribution of prepared emulsions was broader than in a multi-stage process at smaller pressures. The transmembrane flux was in the range of 1.8–37 m3 m−2 h−1 and increased with increasing pressure difference and decreasing the content of W/O particles. The mean size of W/O particles in each cycle was remarkably constant over a wide range of their concentration of 1–60 vol.%.

Subfields: Biomedical Engineering, Materials Chemistry, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/fa538d69bfbbd78ad6d5f0d62b467e6465ef5b4a

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In Biomedical Engineering

  1. I. Kobayashi
  2. M. Nakajima
  3. G. Vladisavljević

In Materials Chemistry

  1. I. Kobayashi
  2. M. Nakajima
  3. G. Vladisavljević

In Surfaces, Coatings and Films

  1. G. Vladisavljević

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