ABSTRACT
As has been shown in Chapter IV, the polar component of the interfacial tension:
γ γ γ γ γ γ γ γ γ12AB = + − −2 1 1 2 2 1 2 1 2( ) [IV-7]*
can readily assume a negative value when
γ γ γ γ1 2 1 2 < >and [IV-8A]
or when
γ γ γ γ1 2 1 2 > <and [IV-8B]
And when |γ12AB| > γ12LW, and γ12AB < 0, the total interfacial tension:
γ γ( )γ γ γ γ γ
γ γ γ
2= − + +
− −
1 2 γ )
[IV-9]
will have a negative value. In practice this occurs quite readily in biological and other aqueous systems.