Here, a KNAUER HPLC system was used in combination with a linear GPC column to perform calibrations of polystyrene (PS) and polymethylmethacrylate (PMMA) in tetrahydrofuran (THF), chloroform (CHCl3) and ethyl acetate (EtOAc). The calibrations were tested using narrow PS standards. It was found that the methods for PS and PMMA in THF and chloroform provided excellent results. In addition, it was shown that calibration with PS in EtOAc is not suitable due to an apparent interaction of PS with the column. A linear column allowed all of the analytes to be analyzed in less than 15 minutes and with a solvent consumption of less than approximately 67 % when compared to conventional methods, in which 3 single-porosity columns are used.
16-point PS calibration in chloroform
12-point PMMA calibration in chloroform
15-point PS calibration in EtOAc
12-point PMMA calibration in EtOAc
15-point PS calibration in THF
11-point PMMA calibration in EtOAc
|Schlüsselwörter||GPC, SEC, polymer, biopolymers, bioplastic, biodegradable, universal calibration, PS, polystyrene, PMMA, polymethylmethacrylate, green SEC, green GPC, biobased plastic, polydispersity|
|Version||Version 1/ 10/2021|
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