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RETRACTED ARTICLE: Influence of the Disk Diameter and Baffle Position on the Performance of Generated Colloidal Gas Aphrons
Author(s) -
Banifatemi Sina S.,
Mohammadifard Hossein,
Amiri Mohammad C.
Publication year - 2016
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-015-1750-2
Subject(s) - baffle , chemistry , dispersion (optics) , pulmonary surfactant , shell (structure) , composite material , colloid , volume (thermodynamics) , mixing (physics) , position (finance) , mechanics , optics , chemical engineering , materials science , thermodynamics , physics , biochemistry , engineering , finance , quantum mechanics , economics
Aphrons are surfactant‐stabilized microbubbles with thick soapy shells. Colloidal gas aphrons (CGA) with an average diameter of 50 μm have some unique properties: a high interfacial area due to their small size, a thick soapy shell and, above all, high stability compared to conventional foams. Various factors that can influence the performance of CGA dispersion, such as the type and concentration of surfactant, mixing time and processing parameters, have already been extensively studied. However, although CGA applications in various fields continue to advance, the influence of the disk diameter and baffle position of the aphron generator on the performance of CGAs has not been well studied. In this experimental work, the influences of the spinning disk diameter and baffle position inside the aphron generator have been investigated. Analyzing the drainage curve of various experimental runs revealed that the disk diameter and baffle position might have a positive impact on the stability of CGA dispersion particularly when the generation time or surfactant concentration is low. The experimental findings have been supported by other techniques such as half‐life time and a new stability index, T 0.1 , the time elapsed when the drained liquid from CGA dispersion reaches ten percent of its final height.