  The lattice cluster theory (LCT) for semiflexible linear telechelic melts,
developed in paper I, is applied to examine the influence of chain stiffness on
the average degree of self-assembly and the basic thermodynamic properties of
linear telechelic polymer melts. Our calculations imply that chain stiffness
promotes self-assembly of linear telechelic polymer melts that assemble on
cooling when either polymer volume fraction $\phi$ or temperature $T$ is high,
but opposes self-assembly when both $\phi$ and $T$ are sufficiently low. This
allows us to identify a boundary line in the $\phi$-$T$ plane that separates
two regions of qualitatively different influence of chain stiffness on
self-assembly. The enthalpy and entropy of self-assembly are usually treated as
adjustable parameters in classical Flory-Huggins type theories for the
equilibrium self-assembly of polymers, but they are demonstrated here to
strongly depend on chain stiffness. Moreover, illustrative calculations for the
dependence of the entropy density of linear telechelic polymer melts on chain
stiffness demonstrate the importance of including semiflexibility within the
LCT when exploring the nature of glass formation in models of linear telechelic
polymer melts.
