| 低破损率和尺寸可控制备固定化氯化镍的空心聚脲微球 |
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| 引用本文： | 纪红兵,李俊丽,裴丽霞,高建荣.低破损率和尺寸可控制备固定化氯化镍的空心聚脲微球[J].中国化学工程学报,2008,16(1):119-123. |
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| 作者姓名： | 纪红兵 李俊丽 裴丽霞 高建荣 |
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| 作者单位： | 1. The Key Lab of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, South China University of Technology, Guangzhou 510640, China;2. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China |
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| 基金项目： | 国家自然科学基金，the Opening Foundation of Zhejiang Provincial Top Key Discipline，教育部新世纪优秀人才支持计划 |
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| 摘 要： | Polyurea microcapsules containing NiCl2 were prepared by interracial polymerization between diisocyanate and water with triethylamine as a catalyst in water-in-oil emulsion system. The influence of preparation conditions such as the dosage and feed mode of the catalyst, concentration of the encapsulated NiCl2, and concentration and structure of diisocyanates on the breakage of the microcapsules have been evaluated. The results show thatbreakage is strongly dependent on the rate of polymerization and stability of initial emulsion. The improved microcapsules with low breakage have been produced under the optimum conditions. Furthermore, the obtained microcapsules capsules immobilizing NiCl2 as a recyclable catalyst is successfully used in benzaldehyde reduction.
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| 关 键 词： | microcapsules water-in-oil emulsion immobilization NiCl2 |
| 收稿时间： | 2006-10-08 |
| 修稿时间： | 2007-10-02 |
Low breakage and size-controlled preparation of NiCl2 immobilized hollow polyurea microcapsules |
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| JI Hongbing,LI Junli,PEI Lixia,GAO Jianrong.Low breakage and size-controlled preparation of NiCl2 immobilized hollow polyurea microcapsules[J].Chinese Journal of Chemical Engineering,2008,16(1):119-123. |
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| Authors: | JI Hongbing LI Junli PEI Lixia GAO Jianrong |
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| Affiliation: | 1. The Key Lab of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, South China University of Technology, Guangzhou 510640, China;2. State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China |
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| Abstract: | Polyurea microcapsules containing NiC12 were prepared by interfacial polymerization between diisocy-anate and water with triethylamine as a catalyst in water-in-oil emulsion system. The influence of preparation con-ditions such as the dosage and feed mode of the catalyst, concentration of the encapsulated NiCl2, and concentration and structure of diisocyanates on the breakage of the microcapsules have been evaluated. The results show that breakage is strongly dependent on the rate of polymerization and stability of initial emulsion. The improved micro-capsules with low breakage have been produced under the optimum conditions. Furthermore, the obtained micro-capsules immobilizing NiCl2 as a recyclable catalyst is successfully used in benzaldehyde reduction. |
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| Keywords: | microcapsules water-in-oil emulsion immobilization NiCI2 |
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