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| Preparation and embedding–releasing behavior of polyelectrolyte microcapsule |
| CAO Genting1; WANG Zhengke2; HU Qiaoling2; LIU Junqi2; WANG Youxiang2 |
1.Zhejiang Ocean College; Zhoushan 316004
2. Department of Polymer Science and Engineering; Zhejiang University; Key laboratory of Macromolecule Synthesis and Functionalization; Ministry of Education; Hanghzou 310027 |
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Cite this article:
CAO Genting WANG Zhengke HU Qiaoling LIU Junqi WANG Youxiang. Preparation and embedding–releasing behavior of polyelectrolyte microcapsule. Chin J Mater Res, 2009, 23(2): 165-170.
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Abstract Chitosan microspheres, used as template to prepare polyelectrolyte microcapsule, were prepared by high voltage electrostatic method. Polyelectrolyte membrane made of chitosan and sodium alginate was constructed layer–by–layer assembly. A little residual chitosan template can induce sediment of molecule with negative charge. Acetic acid aqueous solution was used to dissolve the chitosan template. The concentration of sodium fluorescein in the microcapsules linearly increased with time, and embeded concentration became saturated after 15 min. When concentration of sodium fluorescein solution is 2 mg/L, the saturated embeded oncentration of sodium fluorescein arrived at 10.2 mg/L. The release behavior is mainly affected by microcapsule's wall and the structure of template, but concentration of NaCl has little influence on the release behaviour.
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Received: 22 May 2008
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| Fund: Supported by National Nature Science Foundtion of China Nos.50333020, 50773070 and Key Basic Research and Development Program of China No.2005CB623902. |
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