0
1
2
3
4
5
6
7
0.00
0.02
0.04
0.06
0.08
0.10
0.12
b
Start of gradient
ELSD Response (V)
Elution volume (mL)
3V A - 30
0
1
2
3
4
5
6
7
0.00
0.05
0.10
0.15
0.20
0.25
EPC (Ethylene rich)
EPC (Propylene rich)
iPP
Start
of
gradient
d
ELSD Response (V)
Elution volume (mL)
3V A - 60
PE
0
1
2
3
4
5
6
7
0.0
0.1
0.2
0.3
0.4
0.5
0.6
3V A - 80
f
Start of gradient
ELSD Response (V)
Elution volume (mL)
0
1
2
3
4
5
6
7
0.0
0.5
1.0
1.5
2.0
h
Start of gradient
ELSD Response (V)
Elution volume (mL)
3V A - 90
0
1
2
3
4
5
6
7
0.00
0.04
0.08
0.12
0.16
0.20
ELSD Response (V)
Elution volume (mL)
3V 30
Start of gradient
a
EPR
iPP
0
1
2
3
4
5
6
7
0.000
0.004
0.008
0.012
0.016
0.020
c
iPP
EPC
(Ethylene rich)
EPC
(Propylene rich)
Start
of
gradient
ELSD Response (V)
Elution volume (mL)
3V 60
0
1
2
3
4
5
6
7
0.00
0.01
0.02
0.03
0.04
EPC
(Ethylene
rich)
and
PE
iPP
Start
of
gradient
EPC
(Propylene
rich)
ELSD Response (V)
Elution volume (mL)
3V 80
e
0
1
2
3
4
5
6
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
g
Start
of
gradient
ELSD Response (V)
Elution volume (mL)
3V 90
Fig. 3.50 HT-HPLC chromatograms of TREF fractions (30
C, 60
C, 80
C and 90
C) of
samples 3V (a, c, e, g) and 3VA (b, d, f, h) (reprinted from [111] with permission of Elsevier)
136
3 Column-Based Chromatographic Techniques