Characterization of polyoxyethylenes according to the number of hydroxy end groups by hydrophilic interaction chromatography at critical conditions for polyethylene glycol.
Polyoxyethylenes with different functionality and architecture can be separated according to the number of terminal hydroxy groups on polar stationary phases in acetone water mobile phases containing 90-97% acetone. The best results were obtained on a HILIC column. Typical samples, which can be analyzed by this technique, are polyethylene glycols, their mono- and dialkyl ethers, macromonomers, the fatty esters of PEG, and ethoxylated glycerol.
Institute of Chemistry, Karl-Franzens-University, Graz, Austria.
Shazia
S
Abrar
Bernd
B
Trathnigg
D000096:Acetone / Q000737:chemistry; D002853:Chromatography, Liquid; D011092:Polyethylene Glycols / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D014867:Water; D000096:Acetone; D011092:Polyethylene Glycols