Polysaccharides as stabilizers for the synthesis of magnetic nanoparticles

被引：135

作者：

Chang, Peter R. ^{[2
,3
]}

Yu, Jiugao ^{[1
]}

Ma, Xiaofei ^{[1
]}

Anderson, Debbie P. ^{[2
]}

机构：

[1] Tianjin Univ, Dept Chem, Sch Sci, Tianjin 300072, Peoples R China

[2] Agr & Agri Food Canada, Bioprod & Bioproc Natl Sci Program, Saskatoon, SK S7N 0X2, Canada

[3] Univ Saskatchewan, Dept Agr & Bioresource Engn, Saskatoon, SK S7N 5A9, Canada

来源：

CARBOHYDRATE POLYMERS | 2011年 / 83卷 / 02期

关键词：

Agar; Carboxymethyl cellulose sodium; Fe3O4; Starch; Nanoparticles; IRON-OXIDE NANOPARTICLES; METAL NANOPARTICLES; NANOCOMPOSITE FILMS; SOLUBLE STARCH; CHITOSAN; FABRICATION; SUSPENSION; FIBERS; SODIUM; MATRIX;

D O I：

10.1016/j.carbpol.2010.08.027

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study superparamagnetic Fe3O4 nanoparticles were individually prepared with one of three polysaccharides as stabilizer i e soluble starch carboxymethyl cellulose sodium (CMC) and agar Since polysaccharides present the dynamic supramolecular associations facilitated by inter- and intramolecular hydrogen bonding they can act as templates for the growth of nanosized Fe3O4 The resultant polysaccharide-Fe3O4 were characterized by Fourier transform infrared (FTIR) spectroscopy thermogravimetric (TG) analysis transmission electron microscopy (TEM) X-ray diffraction (XRD) and magnetic properties TEM revealed that Fe3O4 was encapsulated by polysaccharides The particle size of starch-Fe3O4 (SF) was obviously smaller than those from CMC-Fe3O4 (CF) and agar-Fe3O4 (AF) TG analysis was used to calculate the Fe3O4 contents of SF CF and AF-62 7 47 8 and 57 4% respectively The saturation magnetization (20 43 emu/g) of AF was much lower than that of SF (36 16 emu/g) and CF (35 75 emu/g) The polysaccharide-Fe3O4 exhibited an extremely small hysteresis loop and low coercivity (C) 2010 Elsevier Ltd All rights reserved

引用

页码：640 / 644

页数：5

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