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SYNTHESIS AND CHARACTERIZATION OF A C8 STATIONARY PHASE, BONDED WITH 2-ACRYLAMIDO-2-METHYL-1-PROPANESULFONIC ACID, FOR HPLC

ABSTRACT The silanization/hydrosilation method is used to bond a mixed stationary phase consisting of both octyl (C8) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) moieties. The intermediates, as well as the final product, are characterized by elemental analysis, diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, and carbon-13 CP-MAS NMR spectroscopy. The results demonstrate that both the AMPS and C8 groups are successfully bonded on the same silica hydride support material. The final product (C8+AMPS) is characterized chromatographically and compared to the behavior of the same solutes on both a C8 phase and an AMPS phase.