I have found that homogenizer (high speed and high pressure) is mainly used to prepare micro or nano-emulsions. Very few is reported with an ultrasoniator.
Dear Poonam Singha,
For microemulsions you do not need high intensity mixers at all.
For nanoemulsions ultrasonication is used. However, sonication may introduce chemical modification, which has to be avoided in food industry.
For homogenization of small volumes, an ultrasonifier is commonly used.
For large volumes, rotor-stator systems, microfluidizers and high-pressure homogenizers are substituted.
In the case of ultrasound, the possible mechanism of droplet disruption can be cavitation. The shock waves produced on the total collapse of the bubbles cause the break up of the surrounding monomer droplets.
References:
Asua J.M., Miniemulsion polymerization, Prog. Polym. Sci., 2002, 27,
1283-1346.
Mason T.J., Industrial sonochemistry: potential and practicality, Ultrasonics, 1992, 30, 192-196.
Lauterborn W., Ohl C-D., Cavitation bubble dynamics, Ultrasonics Sonochemistry, 1997, 4, 65-75.
Yes, sure, sonifiers are used for this purpose. But particle or droplet size distribution is unkown. Bur then, the modern standard ELICTROACOUSTICAL INSTRUMENTATION can be used for characterization procedure.
Could you look into this link and see the papers related to the generation of nanoemulsions (ultrasound and hydrodynamic cavitation)?
https://www.researchgate.net/profile/Sivakumar_Manickam/?ev=hdr_xprf
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