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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 8, Number 5
BKCSDE 8(5)
May 20, 1987 

 
Title
Polymer Adsorption at the Oil-Water Interface
Author
Woongki Lee, Hyungsuk Pak*
Keywords
Abstract
A general theory of polymer adsorption at a semi-permeable oil-water interface of the biphasic solution is presented. The configurational factor of the solution in the presence of the semi-open boundary at the interface is evaluated by the quasicrystalline lattice model. The present theory gives the feature of the bulk concentration equilibria between oil-water subsystems and the surface excesses of Γα and Γβ of the polymer segments as a function of the degree of polymerization r, the Flory-Huggins parameter in β-phase xβp, the differential adsorption energy parameter in β-phase xβσ, the differential interaction energy parameter Δxp, and the bulk concentration of the polymer in β-phase φ2β(*). From our numerical results, the characteristics of Γα are shown to be significantly different from those of Γβ in the case of high polymers, and this would be the most apparent feature of the adsorption behavior of the polymer at a semi-permeable oil-water interface, which is sensitively dependent on Δxp and r.
Page
398 - 403
Full Text
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