Efficiency of methacrylate monolithic columns in reversed-phase liquid chromatographic separations

Polyhedral oligomeric silsesquioxanes as functional monomer to prepare hybrid monolithic columns for capillary electrochromatography and capillary liquid chromatography

“…Furthermore, it is obvious that the efficiencies for alkylbenzenes were remarkably lower than that for thiourea on the two hybrid monoliths. This result is consistent with those on the methacrylate-based monolithic columns in LC and CEC reported by Kok and co-workers [42]. It may be due to the existence of gel porosity, which dominates dispersion and retention dynamics of these two POSS-containing monoliths [40,41].…”

Comparison of thermal‐ and photo‐polymerization of lauryl methacrylate monolithic columns for CEC

“…As initial polymerization conditions, initiation was performed at room temperature under 0.9 J/cm 2 (maximum irradiation energy supplied by the crosslinker oven) and several exposure times (5-60 min) were selected [12,13,[21][22][23]. In all cases, photoinitiated polymerization of the mixture containing either 15 or 12 wt% 1,4-butanediol yielded monoliths with excessively large pores.…”

“…These phases are usually prepared via a free-radical polymerization of a mixture consisting of one or more functional monomers, including a cross-linker, in the presence of a porogenic solvent and an initiator. Polymerization reaction is usually initiated thermally [4][5][6][7][8][9] or by UVirradiation [6,7,[9][10][11][12][13], although other less common approaches such as the use of g-radiation [14,15] or chemical agents [16][17][18][19] have been described.…”

“…Moreover, most literature concerning photoinitiated methacrylate-based monoliths has reported the use of butyl methacrylate as bulk monomer [7,9,[11][12][13][20][21][22][23], whereas other longer alkyl chain monomers, such as lauryl methacrylate (LMA) [27,28] have been barely employed.…”

Separation of Inorganic Anions Using Methacrylate-Based Monolithic Column Modified with Trimethylamine in Ion Chromatography Capillary System

“…There are three types of organic polymer-based monolithic columns: acrylamide-based, methacrylate-based, and styrene-based polymers [30]. The methacrylate-based polymers have some advantages related with their use as stationary phase in monolithic columns, such as simple preparation, easy functionalization, various selectivity, and high stability under extreme pH conditions (pH 2 or 12) [31,32].…”