Effects of Flow Rate (2) (FP-2002)

The standard flow rate of the packed column GPC FP-2002 for organic solvent-based SEC (GPC) is 10 mL/min. We have investigated the flow rate dependency of phthalate esters recycling separation. Even at the maximum usable flow rate of 20 mL/min, there is no extreme drop in column efficiency and further speeding up is possible.
(Note) In the case of a polymer sample, molecular chain breakage tends to occur as the molecular weight increases. It is recommended to lower the flow rate, if there is a possibility that chain scission has occurred.


Sample : 3 % each, 1 mL
1. Dibutyl phthalate (DBP) (MW: 278.35)
2. Diethyl phthalate (DEP) (MW: 222.24)
3. Dimethyl phthalate (DMP) (MW: 194.19)


Column       : Shodex GPC FP-2002 (20.0 mm I.D. x 600 mm)
Eluent       : CHCl3
Detector     : UV (254 nm)
Column temp. : 30 °C

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