Polymer-coated cation exchangers in high-performance ion chromatography: preparation and application

Huhn, Gernot; Müller, Helmut

doi:10.1016/0021-9673(93)80168-8

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…Coating silica gels with polybutadiene has been used as a method for improving silica's stability at higher pH or for deactivation of silanophilic interactions [99]. There have been numerous studies on the use of PBD-coated oxides as reversed-phase materials [20,30,38,39,55,56,58,64,[74][75][76]78,80,85,88,89,[91][92][93]95,[100][101][102][103][104][105][106][107][108][109][110].…”

Section: Polybutadiene-coated Metal Oxidesmentioning

confidence: 99%

Part II. Chromatography using ultra-stable metal oxide-based stationary phases for HPLC

Nawrocki

Dunlap

et al. 2004

Journal of Chromatography A

195

115

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Section: Polybutadiene-coated Metal Oxidesmentioning

confidence: 99%

Part II. Chromatography using ultra-stable metal oxide-based stationary phases for HPLC

Nawrocki

Dunlap

et al. 2004

Journal of Chromatography A

195

115

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“…Ligand cleavage is avoided; but as the cation exchanger prepared by the first method, the phase is very hydrophilic and has poor acid stability. In the third approach, sulfonyl groups are introduced to the surface by using polymer coating techniques [37,38], which can easily cause pore blockage and slow mass transfer [39].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of silica-based hyper-crosslinked sulfonate-modified reversed stationary phases

Luo

Carr

2008

Journal of Chromatography A

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A novel type of silica-based sulfonate-modified reversed phase ( − SO 3 -HC-C 8 ) has been synthesized; it is based on a newly developed acid stable "hyper-crosslinked" C 8 derivatized reversed phase, denoted HC-C 8 . The − SO 3 -HC-C 8 phases containing controlled amounts of sulfonyl groups were made by sulfonating the aromatic hyper-crosslinked network of the HC-C 8 phase at different temperatures. The − SO 3 -HC-C 8 phases are only slightly less hydrophobic than the parent HC-C 8 phase. The added sulfonyl groups provide a unique strong cation-exchange selectivity to the hydrophobic hyper-crosslinked substrate as indicated by the very large C coefficient as shown by Snyder's hydrophobic subtraction reversed-phase characterization method. This cation-exchange activity clearly distinguishes the sulfonated phase from all other reversed phases as confirmed by the extraordinary high values of Snyder's column comparison function F s . In addition, as was found in previous studies of silica-based and zirconia-based reversed phases, a strong correlation between the cation-exchange interaction and hydrophobic interaction was observed for these sulfonated phases in studies of the retention of cationic solutes. The overall chromatographic selectivity of these − SO 3 -HC-C 8 phases is greatly enhanced by its high hydrophobicity through a "hydrophobically assisted" ion-exchange retention process.

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Chromatographic properties of chiral stationary phases based on human serum albumin. Influence of the polymer sublayer

Millot¹,

Loehman²,

Sébille³

et al. 1999

Chromatographia

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Chiral stationary phases based on human serum albumin were prepared by using a reactive polymer, polyacryloyl chloride, to attach the protein to the silica particles. The retention data of the enantiomers depend on the structure of the polymer sublayer. In most cases, higher selectivity values are observed when the polymer coating is formed by polymerization inside the pores of the silica (in situ polymerization) than with polymer layers deposited by conventional coating methods. This result was attributed to the higher mobility of polymer chains obtained by the former method, which results in lower distortion of the protein after immobilization.

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Polymer-coated cation exchangers in high-performance ion chromatography: preparation and application

Cited by 8 publications

References 5 publications

Part II. Chromatography using ultra-stable metal oxide-based stationary phases for HPLC

Part II. Chromatography using ultra-stable metal oxide-based stationary phases for HPLC

Synthesis and characterization of silica-based hyper-crosslinked sulfonate-modified reversed stationary phases

Chromatographic properties of chiral stationary phases based on human serum albumin. Influence of the polymer sublayer

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