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Macro‐encapsulation I. Production of composite drops
Author(s) -
AboulNasr Osman T.,
Huang Robert Y. M.
Publication year - 1979
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450570611
Subject(s) - nozzle , drop (telecommunication) , composite number , materials science , mechanics , concentric , coaxial , process engineering , composite material , mechanical engineering , petroleum engineering , environmental science , engineering , physics , mathematics , geometry
A method for the production of concentric drops is presented in detail. The apparatus consists of two coaxial nozzles at the bottom of a column, and the necessary pumping equipment. Two immiscible liquids arc pumped individually through the nozzles. The resultant drop is allowed to rise through a column of liquid immiscible with the outer drop. Details of the experimental procedures and results are presented. A theoretical model describing the behaviour of the system, based on the hydrodynamics of drop formation, is developed. The production of composite drops can be applied to many products, for example: sustained delivery of drugs and time‐release fertilizer.