8
GPC
EcoSEC HIGH TEMPERATURE GPC SYSTEM
PERFORMANCE PROOF - APPLICATIONS
POLYPROPYLENE
Polypropylene (PP), also known as polypropene, is a ther-
moplastic plastic polyolefin polymer used in a wide variety
of applications including packaging and labeling, textiles
(e.g., ropes, thermal underwear and carpets), stationery,
plastic parts and reusable containers of various types, labo-
ratory equipment, loudspeakers, automotive components,
and polymer banknotes. Polymers made from the mono-
mer propylene, are rugged and unusually resistant to many
chemical solvents, bases and acids. Analysis of polypro-
pylene using two TSKgel GMHHR-H HT columns and the
EcoSEC High Temperature GPC System is shown in Figure 8.
HIGH-DENSITY POLYETHYLENE
Analysis of high-density polyethylene (HDPE) or polyeth-
ylene high-density (PEHD), a polyethylene thermoplastic
made from petroleum, by high temperature GPC is shown
in Figure 9. HDPE’s are known for their high strength to
density ratio and are commonly used in the production of
plastic bottles, corrosion-resistant piping, geomembranes,
and plastic lumber.
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10
15
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Column:
TSKgel GMH
HR
-H HT, 5 µm, 7.8 mm × 30 cm × 2
Mobile phase:
ODCB
Flow rate:
1 mL/min
Detector:
RI
Temperature:
140 ˚C
Injection vol.:
300 µL
Sample:
standard
Sample load:
0.2 (w/V)
Retention time (minutes)
Detector response (mV)
ANALYSIS OF HIGH-DENSITY POLYETHYLENE BY HIGH TEMPERA-
TURE GPC
Column: TSKgel GMH
HR
-H HT, 5 µm, 7.8 mm ID × 30 cm L × 2
Mobile phase: ODCB; Flow rate: 1 mL/min;
Detector: RI (EcoSEC High Temperature GPC System); Temp.: 140 ˚C;
FIGURE 9
8
13
18
23
Retention time (minutes)
Detector response (mV)
Column:
TSKgel GMH
HR
-H(S)HT, 7.8 mm × 30 cm × 2
Mobile phase:
ODCB + 0.05% BHT
Flow rate:
1 mL/min
Detector:
RI
Temperature:
145 ˚C
Injection vol.:
300 µL
Sample:
polypropylene
Sample load:
1.0 g/L
ANALYSIS OF POLYPROPYLENE BY HIGH TEMPERATURE GPC
Column: TSKgel GMH
HR
-H(S)HT, 13 µm, 7.8 mm ID × 30 cm L × 2
Mobile phase: ODCB with 0.05% BHT; Flow rate: 1.0 mL/min
D tector: RI (EcoSEC High Temperature GPC System); Temp.: 145 ˚C;
I j ction vol.: 300 µL; Sample: polypropylene; Sample load: 1.0 g/L
FIGURE 8
