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.