Chinese Journal of Analytical Chemistry 2010;38(3):401-404

doi:10.3724/SP.J.1096.2010.00401

Preparation of Benzonic Acid Molecularly Imprinted Polymers and Its Adsorption Property

Dawei LOU ; Yingjie YANG ; Guang HUANG ; Pingli PU ; Xinqing LEE ; Bo ZHU ; Yuehong WANG

Keywords

Molecularly imprinted polymer; Benzoic acid; Bulk polymerization; Needle-type gas concentrator; Gas chromatography

Country

China

Language

Chinese

Abstract

A molecularly imprinted polymer (MIP) using benzoic acid as template molecule, 4-vinyl pyridine (4-VP) as functional monomer, ethylene dimethacrylate (EDMA) as cross-linker, was prepared by bulk polymerization. The needle-type gas concentrator was developed using the MIP as adsorption medium. The device was coupled with gas chromatography (GC) for the analysis of volatile organic compounds (VOCs). The effect of polymerization conditions on adsorption property, such as polymerization time, ratio of the reagents, pre-polymerization time, type of solvents, type of template molecules, has been evaluated. The results of gas chromatographic analysis demonstrated that the optimum conditions for getting the best adsorption performance of the synthesized were polymerization time 6 h at 60 ℃, the ratio of the reagents (template molecule : functional monomer : cross-linker) 1∶ 4∶ 20, pre-polymerization time of 3 h, acetonitrile as solvent, benzoic acid as template.