12
GPC
EcoSEC HIGH TEMPERATURE GPC SYSTEM
THE HEART OF PERFORMANCE - COLUMNS
TSKgel H series columns are recommended for the analysis
of organic-soluble polymers and are packed with spherical
particles composed of polystyrene cross-linked with divi-
nylbenzene (PS-DVB). The “GM” prefix denotes a column
packed with particles of different pore sizes blended to pro-
vide an extended linear calibration curve. The TSKgel HT
series are for high temperature applications (
≤
140 °C) while
the TSKgel HT2 columns are used in ultra-high temperature
(up to 220 °C) applications.
Figure 10 demonstrates the performance stability of the
TSKgel GMHHR-H HT columns compared to other com-
mercially available high temperature GPC columns during
repetitive temperature changes.
The TSKgel H
HR
HT columns and two commercially avail-
able high temperature GPC columns were subjected to
drastic changes in temperature by raising the temperature
for 2 hours followed by lowering the temperature for two
hours for a total of 60 cycles. The number of theoretical
plates was shown to remain constant for the TSKgel HHR
HT columns and to decrease by 15% for the two commer-
cially available high temperature GPC columns; thus reveal-
ing the superior performance stability of the TSKgel HHR
HT columns.
Table 2 lists the attributes of the TSKgel HT columns which
are for high temperature applications up to 140 °C.
0
85
90
95
100
105
110
10
20
30
40
50
60
70
Reduction of theoretical plates (%)
Number of temperature changes
TSKgel GMH
HR
-H HT
commercial column A
commercial column B
DURABILITY OF TSKgel H
HR
HT COLUMNS COMPARED TO TWO
COMMERCIALLY AVAILABLE HIGH TEMPERATURE GPC COLUMNS
Column: TSKgel GMH
HR
-H HT, 5 µm, 7.8 mm ID × 30 cm L × 2;
Mobile phase: ODCB with 0.05% BHT; Flow rate: 1 mL/min;
Detector: RI (EcoSEC High Temperature GPC System);
Temperature: 40 to 145 ˚C
FIGURE 10
