Chinese Journal of Applied Chemistry ›› 2010, Vol. 27 ›› Issue (05): 518-522.DOI: 10.3724/SP.J.1095.2010.90470

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Preparation of Hydroquinone Molecularly Imprinted Polymer Microspheres by Suspension Polymerization in Two-phase System of Ionic Liquid-based Aqueous

ZHANG Mao-Sheng1*, HUANG Jia-Rong2, YE Ping1 CHEN Li-Zhu1   

  1. (1.Zhangzhou Normal University,Department of Chemistry and Environmental Science,Zhangzhou 363000;
    2.Zhangzhou EntryExit Inspection and Quarantine Bureau,Zhangzhou)
  • Received:2009-07-15 Revised:2009-09-15 Online:2010-05-10 Published:2010-05-10

Abstract:

The molecularly imprinted microspheres(MIMs-IL) were synthesized with hydroquinone as template molecules, α-acrylic acid as functional monomer and ethylene glycol dimethacrylate as cross-linker by suspension polymerization in two-phase system of ionic liquidbased aqueous. The MIMs-IL was characterized by FTIR and its selective recognition was evaluated by adsorption experiments. [Bmim]PF6 was selected from three different types of IL. Compared with that of the molecularly imprinted microspheres(MIMs-Or) prepared in twophase system of chloroformaqueous, the yield of MIMs-IL, 70.8% is obviously higher than that of MIMs-Or, 48.7%. The recognition adsorption of MIMs-IL for hydroquinone in water solution is higher than that of MIMs-Or. Moreover, the results of thermodynamics and kinetics of the recognition adsorption of MIMs-IL show that the saturation adsorption amount was achieved in 12 h, and MIMs-IL displayed a 2.67-fold increase in adsorption amount for 0.50 g/L hydroquinone water solution compared to its none molecularly imprinted microspheres(nMIMs-IL).

Key words: Molecularly imprinted technique, Suspension polymerization;Ionic liquid;Hydroquinone

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