Atom-transfer radical graft polymerization initiated directly from silica applied to functionalization of stationary phases for high-performance liquid chromatography in the hydrophilic interaction chromatography mode.

Initiation of atom-transfer radical polymerization of a number of monomers (styrene, methyl acrylate, 3-[N,N-dimethyl-N-(methacryloyloxyethyl)ammonium] propanesulfonate, butyl methacrylate, 2,3-epoxypropyl methacrylate) directly from chlorinated porous silica particles has been performed. The grafting has been confirmed and evaluated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. This initiation technique results in a hydrolytically stable initial Si-C bond, tethering the polymer to the silica substrate. The resulting grafted particles have been used as separation materials for both reversed-phase and hydrophilic interaction chromatography.

Szumski, MichalUmeå universitet,Kemiska institutionen (författare)
Irgum, KnutUmeå universitet,Kemiska institutionen(Swepub:umu)knir0001 (författare)
Umeå universitetKemiska institutionen (creator_code:org_t)

Ingår i:Analytical Chemistry: American Chemical Society (ACS)78:20, s. 7098-71030003-27001520-6882

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