Size Exclusion Chromatography (SEC)

Characterization

Brand

Agilent 1260 Infinity-II

Eluent

Dimethyl Formamide (DMF)
Hexafluoroisopropanol (HFIP)
Tetrahydrofuran (THF)
Water (H2O)

Temperature range

40 – 80 °C

Detectors

Refractive index (RI)

Sample size

2 mg

Output

Average molecular mass
Dispersity

SEC (or GPC) is used to determine the average molecular mass (Mw and Mn) and the dispersity (Mw /Mn) of polymers. These characteristics have a strong influence on the mechanical and thermal properties of the material. The results of a SEC measurement can therefore be useful in assessing processing parameters. Molecular masses are calibrated versus monodisperse polymer standards.