Characterization of Fe3O4/poly(styrene-co-N-isopropylacrylamide) magnetic particles with temperature sensitivity

被引：20

作者：

Ding, X ^{[1
]}

Sun, Z

Zhang, W

Peng, Y

Chan, ASC

Li, P

机构：

[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Peoples R China

[2] Hong Kong Polytech Univ, Open Lab Chirotechnol, Hong Kong, Hong Kong, Peoples R China

[3] Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Kong, Hong Kong, Peoples R China

来源：

COLLOID AND POLYMER SCIENCE | 2000年 / 278卷 / 05期

关键词：

thermosensitive; magnetic; particle; characterization;

D O I：

10.1007/s003960050539

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The average diameter, diameter distribution and surface morphology of Fe3O4/poly(styrene-co-N-isopropylacrylamide)[P(St-NI- PAM)] particles were characterized by scanning electron microscopy. The copolymer structure was confirmed by IR spectroscopy, differential scanning calorimetry and elemental analysis. The content of Fe3O4 entrapped in the particles was determined by atomic absorption spectrometry. A coarse structure was observed on the surface of the Fe3O4/P(St-NIPAM) particles. The hydrodynamic diameter of the Fe3O4/P(St-NIPAM) particles was found to exhibit about a 15% decrease in diameter on changing the temperature from 25 to 40 degrees C. The results also showed that Fe3O4/P(St-NIPAM) an advantage of exploited magnetic separation.

引用

页码：459 / 463

页数：5

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