Physicochemical Studies on Biological Macro- and Microemulsions VI : Mixing Behaviors of Eucalyptus Oil, Water and Polyoxyethylene Sorbitan Monolaurate (Tween 20) Assisted by n-Butanol or Cinnamic Alcohol

The phase behavior of Eucalyptus oil/ Tween 20/ Butanol/ Water and Eucalyptus oil/ Tween 20/ Cinnamic Alcohol/ Water systems have ben studied in detail. Both triangular and tetrahedral representations have been considered to understand the topological nature of the multicomponent mixtures. Shear vis...

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Bibliographic Details
Published in:Journal of dispersion science and technology 1999-01, Vol.20 (5), p.1407-1427
Main Authors: MAJHI, PINAKI R., MOULIK, SATYA P.
Format: Article
Language:English
Subjects:
Alcohols
Biological materials
Calorimetry
Chemical analysis
Dissolution
Mixing
Oils and fats
Phase composition
Phase separation
Polyethylenes
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Summary:The phase behavior of Eucalyptus oil/ Tween 20/ Butanol/ Water and Eucalyptus oil/ Tween 20/ Cinnamic Alcohol/ Water systems have ben studied in detail. Both triangular and tetrahedral representations have been considered to understand the topological nature of the multicomponent mixtures. Shear viscosities of typical multiphasic compositions have been measured at different rates and temperatures. The samples have undergone shear thinning. The effect of temperature on the volumes of multiphasic compositions have been also investigated both increase and decrease of the extents of different phases have been witnessed. The enthalpy of dissolution of both water and oil in presence of amphiphile solutions in oil and water respectively have been determined calorimetrically. Considering the phase separation point to be the point of maximum solubility of microdroplets, the free energies and hence entropies ofsolution have been estimated. The above phy.sicochemical features have been also examined in presence of additives, viz, NaGI and urea.
ISSN:0193-2691
1532-2351
DOI:10.1080/01932699908943860