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In-situ synthesis of PHEMA magnetic nanogels via photochemical method

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Abstract

One-pot synthesis of magnetic nanogels via photochemical method is reported in this paper. Poly(2-hydroxyethyl methacrylate)(PHEMA) magnetic nanogels are synthesized by in-situ polymerization of 2-hydroxyethyl methacrylate (HEMA) and N,N′-methylene-bis-(acrylamide)(MBA) in Fe3O4 aqueous suspension under UV irradiation. The structure and compositions of magnetic nanogels are characterized by FTIR, TGA, SEM, TEM and PCS. TGA measurement indicates that magnetic nanogels contain 90% magnetite. Both naked Fe3O4 and magnetic nanogels are superparamagnatic at room temperature according to magnetization curves. The swollen capability of the hydrogel shell is proved by contrasting the particles sizes obtained by SEM, TEM and PCS. Particle diameters can be manipulated by changing monomer concentration and irradiation time. A mechanism of the coating process is proposed.

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Authors and Affiliations

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

    Gong PeiJun, Sun HanWen, Hong Jun, Xu DongMei & Yao SiDe

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100039, China

    Gong PeiJun, Sun HanWen, Hong Jun & Xu DongMei

Authors
  1. Gong PeiJun
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  2. Sun HanWen
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  3. Hong Jun
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  4. Xu DongMei
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  5. Yao SiDe
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Corresponding author

Correspondence to Yao SiDe.

Additional information

Supported by the Shanghai Municipal Commission for Special Project of Nanometer Science and Technology (Grant No. 0452nm068)

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Gong, P., Sun, H., Hong, J. et al. In-situ synthesis of PHEMA magnetic nanogels via photochemical method. SCI CHINA SER B 50, 217–223 (2007). https://doi.org/10.1007/s11426-007-0004-1

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  • DOI: https://doi.org/10.1007/s11426-007-0004-1

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