PROPERTY AND CHARACTERIZATION OF POLYMER MICROSPHERES WITH MAGNETISM AND THERMOSENSITIVITY

DING Xiaobin; SUN Zonghua; WAN Guoxiang; JIANG Yingyan

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PROPERTY AND CHARACTERIZATION OF POLYMER MICROSPHERES WITH MAGNETISM AND THERMOSENSITIVITY

Research Article | 更新时间：2021-03-19

- PROPERTY AND CHARACTERIZATION OF POLYMER MICROSPHERES WITH MAGNETISM AND THERMOSENSITIVITY
- Acta Polymerica Sinica Issue 6, Pages: 674-679(1999)
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- Published：20 December 1999，
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DING Xiaobin, SUN Zonghua, WAN Guoxiang, JIANG Yingyan. PROPERTY AND CHARACTERIZATION OF POLYMER MICROSPHERES WITH MAGNETISM AND THERMOSENSITIVITY. [J]. Acta Polymerica Sinica (6):674-679(1999)
DOI：

DING Xiaobin, SUN Zonghua, WAN Guoxiang, JIANG Yingyan. PROPERTY AND CHARACTERIZATION OF POLYMER MICROSPHERES WITH MAGNETISM AND THERMOSENSITIVITY. [J]. Acta Polymerica Sinica (6):674-679(1999) DOI：

摘要

利用扫描电镜、红外光谱、元素分析仪、热分析及激光散射粒径分析仪等手段对合成得到的Ｆｅ３Ｏ４／Ｐ（ＳｔＮＩＰＡＭ）（ＰＳＮ）和ＰＳＮＮ微球的形貌、结构、磁响应性和热敏特性等进行了表征

结果表明微球的粒径分布呈正态分布

共聚物微球的Ｔｇ随ＮＩＰＡＭ组分的增加而升高

ＰＳＮ和ＰＳＮＮ微球均具有较强的磁响应性

其流体动力学粒径随温度的升高而减小．

Abstract

Thermosensitive magnetic microspheres were characterized by infrared absorption spectrum (IR)

scanning electron microscope

atomic absorption sepectrometry

differential scanning calorimetry (DSC)

laser diffraction particle analyzer etc.The results indicate the size of microspheres was Gaussian distribution

N-isopropylacrylamide(NIPAM) could copolymerized with styrene (St)

and the glass transition temperature (Tg) of copolymers increased with increasing amout of NIPAM.The content of Fe3O4 was about20～100mg/g in the microspheres

which showed strongly magnetic response.The hydrodynamic size of thermosensitive magnetic microspheres was dependent on temperature and shrank about 10～20% above the lower criticle solution temperature(LCST) in water.

关键词

热敏性磁性微球表征

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