Characterization of poly(ethylene glycol)-b-poly(epsilon-caprolactone) by two-dimensional liquid chromatography.
Block copolymers of ethylene oxide and epsilon-caprolactone were synthesized by microwave-assisted polymerization of epsilon-caprolactone with polyethylene glycol monomethyl ethers as initiator. The samples thus obtained were characterized by two-dimensional liquid chromatography with liquid chromatography at critical conditions as the first and liquid exclusion adsorption chromatography as the second dimension. A full baseline separation of all oligomers could be achieved in both dimensions.
Institute of Chemistry, Karl-Franzens University, Graz, Austria.
Hasnat
H
Ahmed
Bernd
B
Trathnigg
D000327:Adsorption; D002850:Chromatography, Gel; D002853:Chromatography, Liquid; D007783:Lactones / Q000138:chemical synthesis / Q000737:chemistry*; D008872:Microwaves; D008970:Molecular Weight; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D012995:Solubility
D007783:Lactones; D012821:Silanes; C521904:poly(ethylene glycol)-block-poly(epsilon-caprolactone); D011092:Polyethylene Glycols; C047147:spherisorb octadecylsilane; D012822:Silicon Dioxide; C042953:octadecyl silane-bonded silica