SYNTHESIS OF THERMOSENSITVE MAGNETIC POLYMER MICROSPHERES

DING Xiaobin; SUN Zhonghua; WAN Guoxiang; JIANG Yingyan

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SYNTHESIS OF THERMOSENSITVE MAGNETIC POLYMER MICROSPHERES

Research Bulletin | 更新时间：2021-03-19

- SYNTHESIS OF THERMOSENSITVE MAGNETIC POLYMER MICROSPHERES
- Acta Polymerica Sinica Issue 5, Pages: 628-631(1998)
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- Published：20 October 1998，
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DING Xiaobin, SUN Zhonghua, WAN Guoxiang, JIANG Yingyan. SYNTHESIS OF THERMOSENSITVE MAGNETIC POLYMER MICROSPHERES. [J]. Acta Polymerica Sinica (5):628-631(1998)
DOI：

DING Xiaobin, SUN Zhonghua, WAN Guoxiang, JIANG Yingyan. SYNTHESIS OF THERMOSENSITVE MAGNETIC POLYMER MICROSPHERES. [J]. Acta Polymerica Sinica (5):628-631(1998) DOI：

摘要

磁性高分子微球由于其在外加磁场作用下简单、快速易行的磁分离特性

其在细胞分离、固定化酶、靶向药物等领域的应用研究日益活跃

并显示出较好的应用前景［１］．有关文献报道了制备磁性微球的不同方法［２］．Ｎ异丙基丙烯酰胺（Ｎｉｓｏｐｒｏｐｙｌａｃｒｙｌａｍｉｄｅ（ＮＩＰＡＭ））的聚合物是具有低临界溶解温度（ＬｏｗｅｒＣｒｉｔｉｃａｌＳｏｌｕｔｉｏｎＴｅｍｐｅｒａｔｕｒｅ（ＬＣＳＴ））的热敏材料

?...

Abstract

Fe3O4/P(St NIPAM) thermosensitive magnetic microspheres with core/shell structure were prepared by copolymerization of styrene(St) and N isopropylacrylamide(NIPAM) in the presence of Fe3O4 magnetic fluid in ethanol/water medium. The content of Fe3O4 is about 20～100mg/g in the microspheres. The hydrodynamic diameter of Fe3O4/ P(St NIPAM) is depended on temperature and shrank above the lower critical solution temperature (LCST) in water. Thermosensitive magnetic microspheres with average diameter size range from 5 to 100μm were obtained by different reaction conditions.Higher initiator concentration formed larger Fe3O4/P(St-NIPAM) microshpheres

Ethanol played important roles in the polymerization

while the stabilizer PEG has smaller effrct for the size of Fe3O4/P(St-NIPAM) microspheres.

关键词

Ｆｅ_３Ｏ_４磁流体热敏性磁性微球低临界溶解温度

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