Synthesis of Davankov‐type hypercrosslinked resins using different isomer compositions of vinylbenzyl chloride monomer,and application in the solid‐phase extraction of polar compounds |
| |
Authors: | Núria Fontanals Jaime Corts Marina Gali Rosa Maria Marc Peter A G Cormack Francesc Borrull David C Sherrington |
| |
Institution: | Núria Fontanals,Jaime Cortés,Marina Galià,Rosa Maria Marcé,Peter A. G. Cormack,Francesc Borrull,David C. Sherrington |
| |
Abstract: | Two different gel‐type resins have been prepared by suspension polymerization using 2 wt % divinylbenzene (DVB) with either p‐vinylbenzyl chloride (pVBC) or a mixture of VBC isomers (~ 70% m‐; ~ 30% p‐). Significant difference in the chlorine content was observed, which was attributed to a more favored hydrolysis process when p‐VBC was used. The presence of hydroxyl groups has been confirmed by elemental microanalytical data and solid‐state 13C cross‐polarization/magic angle spinning (CP‐MAS) nuclear magnetic resonance (NMR) spectra. Hypercrosslinked resins were prepared from both gel‐type precursors by treatment with FeCl3 in 1,2‐dichloroethane (DCE) at 80 °C. The resultant resins showed differences in specific surface area and degree of hydrophilicity. The performance of the hypercrosslinked resins was evaluated in solid‐phase extraction (SPE) of polar compounds, and better results were obtained for the hypercrosslinked resin prepared from p‐VBC that combines a relatively high specific surface area (908 m2 g?1) and somewhat higher oxygen content (3.96 wt % O). © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 1718–1728, 2005 |
| |
Keywords: | hypercrosslinked resin phenols solid‐phase extraction suspension polymerization vinylbenzyl chloride isomers |
|
|