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Polyalkyl methacrylate block sorbents for ion chromatography

A number of block anion-exchanges were prepared on basis of polyalkyl methacrylates with a degree of crosslinking 26% and an ion capacity in the range 0.01–0.52 meq/g using 2-(N,N-dimethylamino)ethyl methacrylate and trymethylamine as aminating agents. How the performance and composition of the reaction mixture influence the hydrodynamic properties and ion capacity of the sorbents formed is discussed. Two different ways of incorporating active anion exchange of amino groups are compared: direct synthesis of triple copolymers containing amino groups by means of thermal radical polymerization, and modification of a preformed polyalkyl methacrylate block matrix by reaction with trimethylamine. The selectivity and efficiency of the sorbents were tested for the separation of a number of inorganic and organic anions by ion chromatography with detection by a conductometer.

Authors:   S. M. Matusova, I. A. Diachkov, A. V. Pirogov, O. A. Shpigun
Journal:   Moscow University Chemistry Bulletin
Year:   2009
DOI:   10.3103/S0027131409030080
Publication date:   03-Aug-2009
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