The name is absent

In eqs. 2.24 and 2.25, x is the radial distance around a segment {x = r∕σ), u^att
— u^att∕e is the reduced potential function, and g^hc is the average segment-segment
radial distribution function of the hard-chain fluid with temperature dependent seg-
ment diameter, d(T). The analytical evaluation of these integrals is tedious since the
expressions for the average segment-segment radial distribution functions for hard
chain fluid are lengthy. In addition these correlations become less accurate for long
chains and polymers [85]. Thereby these were approximated as a power series of the
packing fraction, with the coefficients being a function of the average chain length of
the mixture.

6

∕ι(τ∕, m) = ∑a_i(ni)η',                        (2.26)

i=0

and

6

h(η,m) = ∑b_i (m)η^l.                    (2.27)

i=0

The coefficients are given by

, .        (m — 1) (m — 1) (m — 2)

^αi(^m) ^{= a}0i H--=---^au 4---------^α2O            (2.28)

m  mm

and

(2.29)
m  mm

46

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