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Highly selective magnetic polymer particles via molecular imprinting

  • Polymer, Industrial Chemistry
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Abstract

Magnetic hydrophilic molecularly imprinted polymer (MIP) particles were successfully synthesized via an inverse suspension polymerization in silicone oil, by employing methacryloxypropyltrimethoxysilane(MPS)-modified Fe3O4 nanoparticles as magnetic particles, 2,4-dichlorophenoxyacetic acid (2,4-D) as template, hydroxyethyl methacrylate (HEMA) as hydrophilic monomer, and acetonitrile as high polar porogen. The synthesized magnetic hydrophilic MIP particles could be separated rapidly under an external magnetic field. About 94% transmittance of the particlewater suspension could be reached within 20 min by magnetic separation, whereas about 84% transmittance was achieved after at least 180 min by sedimentation. The adsorption capacity of the particles was also studied in pure aqueous environments. These hydrophilic MIP particles had a higher selectivity for templates. Hydrophilic MIP particles took on a higher imprinting factor than hydrophobic MIP particles and 2,4-D were able to rebind hydrophilic MIP particles more easily than 4-Chorophenoxyacetic acid.

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Authors and Affiliations

  1. Shandong Institute of Nonmetallic Materials, China North Industries Group Corporation, Jinan, Shandong, P. R. China

    Xiaobing Wang, Guihua Qiu, Wei Zheng, Lingmei Kong, Yajuan Xue & Bin Ren

  2. School of Aerospace, Transport and Manufacture, Cranfield University, Bedfordshire, UK

    Yi Ge

  3. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, Sichuan, P. R. China

    Yuxing Peng

Authors
  1. Xiaobing Wang
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  2. Guihua Qiu
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  3. Yi Ge
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  4. Wei Zheng
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  5. Lingmei Kong
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  6. Yajuan Xue
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  7. Bin Ren
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  8. Yuxing Peng
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Correspondence to Guihua Qiu.

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Wang, X., Qiu, G., Ge, Y. et al. Highly selective magnetic polymer particles via molecular imprinting. Korean J. Chem. Eng. 32, 2355–2360 (2015). https://doi.org/10.1007/s11814-015-0055-5

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  • DOI: https://doi.org/10.1007/s11814-015-0055-5

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