Preparation of Porous Magnetic Chitosan Microsphere via High Voltage Electrostatic Method

Chem. J. Chinese Universities

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Preparation of Porous Magnetic Chitosan Microsphere via High Voltage Electrostatic Method

HU Qiao-Ling*, QU Jian, WANG Zheng-Ke, FEI Ruo-Chong, CHAI Fei-Ben, WU Jia, WANG You-Xiang

Key laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Institute of Polymer Composites, Zhejiang University, Hanghzou 310027, China

Received:2008-01-09 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
Contact: HU Qiao-Ling

Abstract

Abstract: Porous magnetic chitosan microspheres with average diameter about 600 μm were prepared by high voltage electrostatic method through mixing Fe₃O₄ particles into CS with silicagel as pore-forming agent and then adding them into thermal NaOH solution to get porous structure. This research studied the preparation technology , as well as the structure and morphology of microsphere with SEM, the results of which indicate that holes of porous magnetic chitosan microspheres with the size approximately 50 μm were uniformly dispersed in the microsphere when the mass volume fraction of chitosan acetic acid aqueous solution was 5% and m_S∶m_CS was 4∶1. Due to its large amount of hydroxyl groups and amino groups, porous magnetic chitosan microspheres could be widely used to deal with acidic dyestuff to improve environment and separated from dirty water by adding magnetic field.

Key words: Chitosan, Magnetic microsphere, Silica gel, High voltage electrostatic method

CLC Number:

O631
TB332

TrendMD:

HU Qiao-Ling*, QU Jian, WANG Zheng-Ke, FEI Ruo-Chong, CHAI Fei-Ben, WU Jia, WANG You-Xiang. Preparation of Porous Magnetic Chitosan Microsphere via High Voltage Electrostatic Method[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Porous Magnetic Chitosan Microsphere via High Voltage Electrostatic Method

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