The viscosity and density of bis(8-methylnonyl) benzene-1,2-
dicarboxylate {diisodecyl phthalate (DIDP)}, with a nominal
viscosity at T = 298 K and p = 0.1 MPa of 87 mPa•s, have been
measured at temperatures from (298.15 to 423.15) K and pressures
from (0.1 to 70) MPa. A vibrating wire viscometer, with a wire
diameter of about 0.15 mm, was utilised for the viscosity
measurements and the results have an expanded uncertainty,
(k = 2), including the error arising from the pressure measurement,
of between ±(2 and 2.5) % The density was determined with two
vibrating tube densimeters one for operation at p≈0.1 MPa with
an expanded uncertainty (k = 2) of about ±0.1 %, the other that
used at pressures up to 70 MPa, with an estimated expanded
uncertainty (k = 2) of about ±0.3 %. Measurements of density and
viscosity were performed on three samples of DIDP each with
different purity stated by the supplier and as a function of water
mass fraction. The measured viscosity and density are represented
by interpolating expressions with differences between the
experimental and calculated values that are comparable with the expanded (k = 2) uncertainties. The obtained viscosities at
p = 0.1 MPa agree with values reported in the literature within the
combined expanded (k = 2) uncertainties of the measurements
while our densities differ by no more than 1.5 %. Viscosity data
at p > 0.1 MPa deviate systematically from the literature values in
the range of -10 % to 10 %.
An apparatus capable of simultaneously measuring the solubility
of a gas dissolved in a liquid and the viscosity and the density of
the resulting mixture over a wide temperature and pressure range
was constructed and tested. Preliminary results have been
reported.
| Identifer | oai:union.ndltd.org:canterbury.ac.nz/oai:ir.canterbury.ac.nz:10092/2065 |
| Date | January 2006 |
| Creators | Almotari, Masaed Moti M |
| Publisher | University of Canterbury. Physics and Astronomy |
| Source Sets | University of Canterbury |
| Language | English |
| Detected Language | English |
| Type | Electronic thesis or dissertation, Text |
| Rights | Copyright Masaed Moti M Almotari, http://library.canterbury.ac.nz/thesis/etheses_copyright.shtml |
| Relation | NZCU |
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