Cannon Instrument miniPV Addendum - Manual (Page 7)

If
ρ
1
/ρ
0
effectively equals 1, density values need not be entered in the
VISCPRO ® software for the solvent and sample.
4. In cases where density and constants are unknown (
ρ = “1”, C = “1”,
E = “0”), the relative viscosity equation simplifies to t
1
/t
0
.
5. If no absolute viscosity values (see previous page) can be calculated,
“N/A” will be displayed.
Other calculations
Reduced viscosity equation: c
rel
red
1 −
=
η
η
Where: c = concentration in deciliters
Inherent Viscosity equation: c
rel
η
η
ln
inh
=
Intrinsic Viscosity equation:
0 c →
=
red
η η lim ] [
Intrinsic viscosity (logarithmic) equation:
0 c →
=
inh
η η lim ] [
Solomon-Ciuta* equation:
) ln ( 2
1
] [
rel red
c
c
η η η − =
Billmeyer* equation: c
rel
red 4
ln 3
4
1
] [
η
η η + =
NOTE
Both the Solomon-Ciuta and Billmeyer equations are single-point intrinsic
viscosity calculations.
K-Value equation after Fickentscher: c
a
c
a a
K
3 . 0 15 . 0
) 2
2
1 (
+
+ + + −
=
Where: a = 1.5 log 1.5 log (
rel
)
View Analysis:
The Choose Analysis window provides one additional available
analyses in the list on the left side of the window, the.Intrinsic Viscosity
Package The Polymer Intrinsic Viscosity Report is available under the
analyses heading and calculates and displays inherent, reduced and
intrinsic viscosity using data collected from samples which have been
tested using the Determine Solvent Viscosity sample action option
.