CIDEPINT   05376
CENTRO DE INVESTIGACIONES EN TECNOLOGIA DE PINTURAS
Unidad Ejecutora - UE
artículos
Título:
Permethylated b-cyclodextrin in liquid poly(oxyethylene) as a stationary phase for capillary gas chromatography
Autor/es:
JAIVER OSORIO GRISALES; PABLO J. LEBED; SONIA KEUCHKARIAN; FRANCISCO R. GONZÁLEZ; CECILIA B. CASTELLS
Revista:
JOURNAL OF CHROMATOGRAPHY - A
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2009 vol. 1216 p. 6844 - 6851
ISSN:
0021-9673
Resumen:
This paper reports the study of poly(oxyethylene) as a solvent for heptakis(2,3,6-tri-O-methyl)-b-cyclodextrin (PM-b-CD) and the potential of these mixtures for constructing enantioselective gas chromatography columns. Enantioseparations of volatile racemic mixtures using capillaries coated with 10 to 50% PM-b-CD diluted in Carbowax 20M were evaluated. The influence of the polymer type on retention, separation and reproducibility over a period of time is critically discussed. The poly(oxyethylene)-based columns were also compared to columns prepared by dilution of PM-b-CD in two polysiloxanes, SE-30 and SE-54, at several temperatures. Finally, we evaluated a new stationary phase prepared by crosslinking the chiral selector to the poly(oxyethylene) matrix.