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Size exclusion chromatography of polylactide acid in three different solvents

Application No.: VEV0085

Size exclusion chromatography of polylactide acid in three different solvents

Several different polylactide acid (PLA) samples have been successfully examined with respect to their molar mass and polydispersity (PD) using a KNAUER HPLC system in combination with a gel permeation chromatography (GPC) column. Calibrations of polystyrene (PS) and polymethyl methacrylate (PMMA) in three different solvents, tetrahydrofuran (THF), chloroform and ethyl acetate (EtOAc) have been recorded. In this study a 20 kDa PLA standard and two real samples were evaluated using these calibrations and the results compared with one another. It could be shown that EtOAc is suitable as an environmentally friendly alternative for the analysis of low molecular weight P(D,L)LA samples.

Technical Data

Application details

Method HPLC
Mode GPC
Substances polylactide acid
Key words PLA, polylacitde acid, GPC, SEC, polymer, biopolymers, bioplastic, biodegradable, universal calibration, PS, polystyrene, PMMA, polymethylmethacrylate, green SEC, green GPC, biobased plastic
Version Version 1/ 11/2021

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