title: Separation of all oligomers in polyethylene glycols and their monomethyl ethers by one-dimensional liquid chromatography.
abstract: Different polymer homologous series having the same repeat unit, but different end groups, can be separated by one-dimensional LAC according to the number of repeat units and functionality, if a favorable combination of the interaction parameters of the repeat unit and the end groups can be found. As an example, polyethylene glycol (PEG) can be determined in PEG monomethyl ethers. The molar mass distribution of the minor component in such samples can be determined even at concentrations of a few percent.
authors.affiliation: Institute of Chemistry, Karl-Franzens-University, Central Polymer Laboratory/Molecular Characteristics (CePol/MC), 8010 Graz, Austria. bernd.trathnigg@uni-graz.at
authors.forename: Bernd
authors.initials: B
authors.lastname: Trathnigg
authors.forename: Hasnat
authors.initials: H
authors.lastname: Ahmed
mesh_terms: D002853:Chromatography, Liquid; D004987:Ethers / Q000302:isolation & purification*; D011092:Polyethylene Glycols / Q000302:isolation & purification*
chemical_list: D004987:Ethers; D011092:Polyethylene Glycols