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Anglický jazyk
Preparation of Macroporous Monoliths for Use in Liquid Chromatography
Autor: Anh Mai Nguyen
High performance liquid chromatogarphy (HPLC) is one of the major techniques in separation sciences. Faster separation and higher efficiency are required to meet ever-growing demands. Despite numerous efforts on improving mass transfer in particulate packings... Viac o knihe
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O knihe
High performance liquid chromatogarphy (HPLC) is one of the major techniques in separation sciences. Faster separation and higher efficiency are required to meet ever-growing demands. Despite numerous efforts on improving mass transfer in particulate packings discontinuity seems to be the cornerstone. Macroporous continuous beds or monoliths are, therefore, a promising alternative to the particle medium. The work deals with the preparation of new monoliths used as support for HPLC stationary phase. Two different approaches were developed: one based on the polycondensation of epoxy resins which were dispersed in aqueous polyamine phase with the aid of a surfactant. The other involved a traverse of linear polyamides solutions around their upper critical solution temperatures (UCST). The polymers, dissolved in a solvent at temperatures higher than their UCSTs followed by slow cooling to below these temperatures to precipitate the polymers. Partly re-established hydrogen bonds resulted in the formation of crystallites that interconnected into a network structure. The study also deals with surface modifying for chromatographic applications.
- Vydavateľstvo: LAP LAMBERT Academic Publishing
- Rok vydania: 2009
- Formát: Paperback
- Rozmer: 220 x 150 mm
- Jazyk: Anglický jazyk
- ISBN: 9783838322346
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