高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (1): 147.

• 论文 • 上一篇    下一篇

葡聚糖磁性毫微粒的制备

李民勤, 徐慧显, 何炳林   

  1. 天津大学高分子化学研究所, 天津 300071
  • 收稿日期:1995-01-17 出版日期:1996-01-24 发布日期:1996-01-24
  • 通讯作者: 徐慧显
  • 作者简介:李民助,男,29岁,硕士,助研.
  • 基金资助:

    国家自然科学基金

Preparation of Dextran Magmetoc Nanoparticles

LI Min-Qin, XU Hui-Xian, HE Bing-Lin   

  1. Institute of Polymer Chemistry, Nankai University, Tianjin 300071
  • Received:1995-01-17 Online:1996-01-24 Published:1996-01-24

摘要: 用共沉淀法制备出具有超顺磁性的葡聚糖磁性毫微粒。通过凝胶色谱法和高速离心法分离出葡聚糖磁性毫微粒。研究了制备过程中葡聚糖浓度、铁盐用量、氨水浓度、Fe3+/Fe2+摩尔比和二价钴对磁性葡聚糖毫微粒磁化率的影响。

关键词: 葡聚糖, 磁性毫微粒, 磁化率, 超顺磁性

Abstract: Superparamagnetic dextran magnetic nanoparticles were prepared by coprecipita-tion.The nanoparticles were separated by gel filtration chromatography and centrifugation.In the course of preparation of dextran magnetic nanoparticles,increase of dextran concentration resulted in decrease of magnetic susceptibility,but increase of amount of ironic saltsand concentration of ammonium hydroxide caused magnetic susceptibility increase. When Fe3+)/Fe2+ molar ratio was between 2~0.5, magnetic susceptibility of dextran magneticnanoparticles was larger.Co2+could replace Fe2+during the preparation.

Key words: Dextran, Magnetic nanoparticles, Susceptibility, Superparamagnetism

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