Thermo Scientific HAAKE RotoVisco 1 Instruction Manual page 138

Hints on Measurement
Equations of Moduli, Viscosity and Loss Tangent:
Basic equations including corrected quantities:
G' = τ γ cos δ
*
= | η | =
η = η
o
tan δ = G''
G'
Equations for the original experimental data and the corre-
sponding corrections:
 
τ τ
γ = −
γ
exp
corrected amplitude ratio
− À = f ( ω )
δ = δ
me exp
original phase angle corrected for electromagnetic effects
but not for mechanical influences

G' = A M
τ
γ cos δ
M A

G'' = A M
τ
γ sin δ
M A
*
= | η | =
η = η
o
tan δ = G''
G'
136
G'' = τ γ sin δ

*
| G |
G' 2 + G''
ω =
ω
mA
= f(ω)
γ
exp
2
+ K
+ Iω
me

− Dω
me

*
| G |
2
G' + G''
ω =
ω
(1)
2
(2)
(3)
(4)
(5)

(6)
2
(7)
(8)