  Analysis of the low resolution UV(IUE) spectra of 15 hot post-AGB candidates
is presented. The UV(IUE) spectra of 10 stars suggest partial obscuration of
the hot stars due to circumstellar dust. The reddened continua of these 10
stars were used to model and estimate the circumstellar extinction. The
circumstellar extinction law was found to be linear in $\lambda^{-1}$ in the
case of IRAS13266-5551 (CPD-55 5588), IRAS14331-6435 (Hen3-1013),
IRAS16206-5956 (SAO 243756), IRAS17074-1845 (Hen3-1347), IRAS17311-4924
(Hen3-1428), IRAS18023-3409 (LSS 4634), IRAS18062+2410 (SAO 85766),
IRAS18371-3159 (LSE 63), IRAS22023+5249 (LSIII +5224) and IRAS22495+5134 (LSIII
+5142). There seems to be no significant circumstellar extinction in the case
of IRAS17203-1534, IRAS17460-3114 (SAO 209306) and IRAS18379-1707 (LSS 5112).
The UV(IUE) spectrum of IRAS12584-4837 (Hen3-847) shows several emission lines
including that of HeII. It may be a massive young OB-supergiant or a low mass
star in the post-AGB phase of evolution. IRAS16206-5956 (SAO 243756) and IRAS
18062+2410 (SAO 85766) show variability in the UV which in addition to stellar
pulsations may be attributed to a dusty torus in motion around the hot central
stars. The UV spectrum of the bipolar PPN, IRAS17423-1755 (Hen3-1475) indicates
that the central B-type star is obscured by a dusty disk. The stars were placed
on the log g$-$log T$_{\rm eff}$ diagram showing the post-AGB evolutionary
tracks of Sch\"onberner. Terminal wind velocities of the stars were estimated
from the CIV and NV stellar wind features. The presence of stellar wind in some
of these stars indicates ongoing mass-loss.
