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Preparation and characterization of porous microspheres and applications in controlled-release of abamectin in water and soil

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Abstract

Porous microspheres with different sizes were prepared through solvent evaporation method with ethylcellulose as a matrix material and abamectin as a core material. The abamectin-loaded microspheres were characterized through scanning electron microscopy (SEM), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The chemical structure of the microspheres was determined through FTIR. DLS analysis showed that the diameter of the microspheres range from 10 to 100 μm. SEM analysis revealed that the inner structure of the microspheres is characterized by a porous network. TGA revealed that the microspheres are thermally stable below 125 °C. The controlled release of abamectin from the microspheres into water and soil was also investigated. Abamectin was released from microspheres into water through diffusion. The release of abamectin into soil was mainly caused by erosion, a result that was verified through SEM.

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Acknowledgments

Project supported by “key projects in the national science and technology pillar program during the Twelfth Five-year Plan Period” (Nos: 2011BAE06A06-10).

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Authors and Affiliations

  1. College of Science, China Agricultural University, Beijing, 100193, China

    Tengfei Fan, Jianguo Feng, Chao Ma, Chi Yu, Jing Li & Xuemin Wu

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  1. Tengfei Fan
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  2. Jianguo Feng
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  3. Chao Ma
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  4. Chi Yu
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  5. Jing Li
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  6. Xuemin Wu
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Correspondence to Xuemin Wu.

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Fan, T., Feng, J., Ma, C. et al. Preparation and characterization of porous microspheres and applications in controlled-release of abamectin in water and soil. J Porous Mater 21, 113–119 (2014). https://doi.org/10.1007/s10934-013-9754-7

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