The name is absent

energy contribution, A^εx∙^hs due to volume exclusion∕short range repulsion, A^EX'^assoc
due to association, and A^EX,att due to long range attraction. The ideal gas functional
is defined as

/m

⅛∑∕>r^s(n)(∣n∕>Γ(n)-ι).          (3.22)

α=l

A^εx'^hs ɪɛ _caι_cuι_ated from Rosenfeld’s FMT [110] for mixtures of hard sphere fluids.

A^ex,assoc can be written following TPTl (eq. 3.8) as

= Z _drι∑_pse₉(_rj £ (lnjɑ(ri)-
α=l        A∈Γ<^α) ʌ

The first summation is over all the segments a, and the second over all the association
sites on segment a. Хд denotes the fraction of segments of type a which are not
bonded at their site A. This fraction is given by the law of mass action.

where a' denotes the neighboring segment of a, site A on a bonds to site B on a',
and

∆^αα'(rι,r₂) = KF^aa'(r₁,r₂)y^aa∖r₁,r₂).                (3.25)

K is a constant geometric factor which depends upon the bonding volume (the sites on
the segments are highly directional, they bond only when the sites on the two segments
are within specific orientations, see Segura et. al. [62]), y^aa (rι,r₂) is the cavity

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