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Citation: HUAI Lu-Feng, YANG Ming, LIU Jun, HU Juan. Synthesis and Characterization of Molecularly Imprinted Polymer Microspheres for Recognition of Chlorpyrifos[J]. Chinese Journal of Applied Chemistry, ;2009, 26(10): 1144-1148. shu

Synthesis and Characterization of Molecularly Imprinted Polymer Microspheres for Recognition of Chlorpyrifos

1.
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023

Corresponding author: YANG Ming,
Received Date: 26 September 2008
Available Online: 18 January 2009
Fund Project: 湖北省自然科学基金(2004ABA095) (2004ABA095)武汉工业学院创新基金(2007cx005)资助项目 (2007cx005)

Molecularly imprinted polymeric microspheres(MIPMs) were prepared by a one-step swelling polymerization method in an aqueous system with polystyrene microspheres obtained by emulsifer-free polyme-rization as seeds and Chlorpyrifos as template molecules. The selective binding characteristics of the MIPMs were evaluated by ultraviolet spectrometry. The infrared spectrum(IR) of the polymer further indicated that there were some functional groups in the moleculary imprinted polymer which could interact with the template. Subsequent morphological characterization of the MIPMs by means of scanning electron microscopy(SEM) shows that the diameters were between 0.5～3 μm(2～3 μm for UMIPMs),and surface rugosity and high porosity facilitated the approaching of the template to the binding sites,so as to obtain high load,affinity and selectivity for the template molecules. Scatchard analysis suggests that during MIPMs recognition of Chlorpyrifos,there were two classes of binding sites. The calculated dissociation constant K_D1 and apparent maximum number B_max1 of binding sites with high affinity were 0.526 mmol/L and 35.91 μmol/g respectively,while K_D2 and B_max2 of binding sites with low affinity were 2.19 mmol/L and 83.87 μmol/g.
- molecularly imprinted polymeric microsphere,
- single-step swelling polymerization,
- chlorpyrifos,
- binding site
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Synthesis and Characterization of Molecularly Imprinted Polymer Microspheres for Recognition of Chlorpyrifos

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com