The document is an Agilent application note by Ben MacCreath and Greg Saunders about analyzing bromostyrene by gel permeation chromatography (GPC) with triple detection. It describes use of the Agilent 390-MDS Multi Detector Suite with light scattering, viscometer, and DRI detectors, with all detectors set at 40 °C.
The methods section lists polystyrene and polybromostyrene samples, PLgel MIXED-C columns, THF eluent, and a 1.0 mL/min flow rate. Results compare the molecular weight distributions and Mark-Houwink plots, concluding that multi-detector GPC with the 390-MDS can show structural differences between polystyrene and a modified polymer.
| Detector train | Agilent 390-MDS with dual angle light scattering, viscometer, and DRI |
|---|---|
| Detector temperature | 40 °C |
| Columns | 2x Agilent PLgel 5 um MIXED-C, 300 x 7.5 mm |
| Flow rate | 1.0 mL/min |
The note uses gel permeation chromatography (GPC) with triple detection.
The detector train incorporates Agilent 390 dual angle light scattering, a viscometer, and DRI options.
THF (stabilized) is used, and the polymers are soluble in tetrahydrofuran.
The polybromostyrene was considerably higher in molecular weight than the polystyrene sample.