| Synthesis and Characterization of Microcapsules with Chlorpyrifos Cores and Polyurea Walls |
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| 作者姓名： | ZHANG Qiang ZHANG Pei-pei JIAO Qing-ze |
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| 作者单位： | [1]College of Science,Beijing Institute of Technology, Beijing 100081, P. R. China [2]College of Chemistry and Environmental Science, Beijing Institute of Technology, Beijing 100081, P. R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，北京市重点实验室基金 |
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| 摘 要： | Microcapsules with chlorpyrifos cores and polyurea walls were synthesized with 2,4-tolylene diisocyanate as an oil-soluble monomer and ethylenediamine as a water-soluble monomer via an interracial polycondensation reaction. The products were characterized by means of Fourier transform infrared spectrometry, ^13C NMR spectrometry and ^31p NMR spectrometry. The morphology, the particle size and the particle size distribution, and the thermal properties were also evaluated. The prepared microcapsules exhibit clear and smooth surfaces and have a mean diameter of 28. 13 μm. These microcapsules also have a good thermal stability for long-term use, and have potential applications in minimizing the toxicity of chlorpyrifos through controlled release.
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| 关 键 词： | 合成 表征 微胶囊 毒死蜱 聚脲 2 4-甲代亚苯基二异氰酸酯 |
| 文章编号： | 1005-9040（2006）-03-379-04 |
| 收稿时间： | 2005-12-31 |
Synthesis and Characterization of Microcapsules with Chlorpyrifos Cores and Polyurea Walls |
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| ZHANG Qiang ZHANG Pei-pei JIAO Qing-ze.Synthesis and Characterization of Microcapsules with Chlorpyrifos Cores and Polyurea Walls[J].Chemical Research in Chinese University,2006,22(3):379-382. |
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| Authors: | Qiang ZHANG Pei-pei ZHANG Qing-ze JIAO |
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| Institution: | aCollege of Science, Beijing Institute of Technology, Beijing 100081, P. R. China;bCollege of Chemistry and Environmental Science, Beijing Institute of Technology, Beijing 100081, P. R. China |
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| Abstract: | Microcapsules with chlorpyrifos cores and polyurea walls were synthesized with 2,4-tolylene diisocyanate as an oil-soluble monomer and ethylenediamine as a water-soluble monomer via an interfacial polycondensation reaction.The products were characterized by means of Fourier transform infrared spectrometry, 13C NMR spectrometry and 31P NMR spectrometry. The morphology, the particle size and the particle size distribution, and the thermal properties were also evaluated. The prepared microcapsules exhibit clear and smooth surfaces and have a mean diameter of 28. 13 μm. These microcapsules also have a good thermal stability for long-term use, and have potential applications in minimizing the toxicity of chlorpyrifos through controlled release. |
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| Keywords: | Microcapsule Chlorpyrifos Polyurea Synthesis Characterization |
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