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Vol. 42, No. 1, pp.30‐35, 2008
A high‐speed mixer enabling particle design
Author(s) -
Shundo A.
Publication year - 2009
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1468-2494.2008.00450_5.x
Subject(s) - static mixer , rotor (electric) , particle size distribution , particle (ecology) , materials science , particle size , seeding , thin film , mechanics , physics , electrical engineering , engineering , nanotechnology , chemical engineering , turbulence , thermodynamics , oceanography , geology
When fluid is mixed by a rotor and small vessel that has a narrow clearance between its wall and the rotor with the upper part covered by an endplate, the processing fluid becomes a high‐speed thin‐film spin flow. This flow possibly allows the peripheral speed to be over 30 m/s, which was unable to be obtained by a conventional high‐speed mixer. As a result, the processing fluid obtains more and homogenous energy. In an actual experiment, we compared a high‐speed thin‐film spin mixer with a conventional high‐speed mixer upon an emulsification experiment with soybean oil. The experiment proved that the former mixer could control the particle size distribution. It also proved that the same result could be obtained by continuous operation as by batch operation. In conclusion, the high‐speed thin‐film spin mixer can control particle size distribution with a high efficiency. Keywords: thin‐film spin, fluid, mixer, particle size distribution, emulsification, continuous processing, batch operation