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Organic-Inorganic Hybrid Copolymer Particles: Preparation and Their Application in Chromatography

Author: LiuLin
Tutor: KeYanXiong
School: East China University of Science and Technology
Course: Pharmaceutical Engineering and Technology
Keywords: Styrene 3-(trimethoxysilyl)propyl methacrylate Two-stage Dispersion Polymerization Ion Chromatography
CLC: O657.75
Type: Master's thesis
Year: 2012
Downloads: 31
Quote: 0
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Abstract


The stationary phase is the key factor in chromatographic separation. The thesis describes the synthesis of a novel polymer-based material, preparation of ion chromatography stationary phases and their application in ion chromarography.A monodisperse copolymer particles of styrene and 3-(trimethoxysilyl)propyl methacrylate were prepared by two-stage dispersion polymerization in the study, which had controlled size in 3-7μm and narrow size distribution. Monodisperse organic-inorganic hybrid materials were produced by a subsequent treatment of hydrolytic process and represented good mechanical character.In the preparation of ion chromatography stationary phases, grafted ion exchange resin and agglomerated ion exchange resin were produced by different modifications in materials’ surface. The stationary phases were evaluated in chromatography. According to the relationship between the concentration of the mobile phase and retention time of the samples, retention mechanism of the two stationary phases is entirely reasonable for ion exchange. The agglomerated ion exchange resin represented very high column efficiency. The srationary phases showed good repeatability and stability in basic mobile phase.The agglomerated ion exchange resin can separate inorganic anions (IO3-、BrO3-、NO2-、Br- and NO3-) and aromatic organic acid efficiently, which affirmed its application value in ion chromatography.

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CLC: > Mathematical sciences and chemical > Chemistry > Analytical Chemistry > Instrument analysis ( physics and physical chemistry ) > Chromatographic analysis > Ion exchange chromatography
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