Application of polymeric high-internal-phase-emulsion-coated stationary-phase columns in open-tubular capillary electrochromatography

Sidratul Choudhury, Damian Connolly, Blánaid White

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The application of polymeric high-internal-phase emulsion (polyHIPE) capillary coatings for open-tubular analytical separation columns was demonstrated in this study for the first time. Multiple polystyrene-co-divinylbenzene polyHIPE layers with an average total depth of 1.73 µm were coated onto internal capillary surfaces to create open-tubular columns (20 cm coating and 32.5 cm effective length). With these columns for open-tubular capillary electrochromatography, ethylbenzene and pentylbenzene were separated. Although the overall separation capacity of the produced columns was low, the polyHIPE coatings improved the analyte peak shape, decreased the total run time, and improved the peak symmetries relative to comparable unmodified open-tubular columns. In addition, the use of these novel polyHIPE columns led to the use of 30% less organic modifier. These columns have the potential to improve the shelf life of open-tubular columns typically used in capillary electrochromatography.

Original languageEnglish
Article number44237
JournalJournal of Applied Polymer Science
Volume133
Issue number48
DOIs
Publication statusPublished - 20 Dec 2016

Keywords

  • coatings
  • emulsion polymerization
  • separation techniques

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