SYNTHESIS AND CHARACTERIZATION OF FERRITES (Fe3O4/CuFe2O4) - CALCIUM ALGINATE HYBRIDS FOR MAGNETIC RESONANCE IMAGING

被引：0
|
作者：
Covaliu, I. C. [1 ]
Neamtu, J. [2 ]
Georgescu, G. [2 ]
Malaeru, T. [2 ]
Cristea, C. [1 ]
Jitaru, I. [1 ]
机构：
[1] Univ Politehn Bucuresti, Fac Appl Chem & Mat Sci, Bucharest, Romania
[2] INCDIE ICPE CA, Bucharest, Romania
来源：
DIGEST JOURNAL OF NANOMATERIALS AND BIOSTRUCTURES | 2011年 / 6卷 / 01期
关键词：
Magnetite; Copper ferrite; Calcium alginate; Hybrid materials; Magnetic properties; IRON-OXIDE NANOPARTICLES; PROSPECTS;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper describes the synthesis of Fe3O4 and CuFe2O4 nanoparticles coated with a polysaccharide type biopolymer - calcium alginate (CaA). The obtained hybrid materials have been characterized by X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Fourier Transform Infrared spectroscopy (FTIR). The Fe3O4- CaA and CuFe2O4- CaA hybrids under the investigation have an average particles size of about 10 nm and 12 nm respectively, and exhibit superparamagnetic behavior with saturation magnetization values of 81 emu/g and 22 emu/g. The FTIR carboxylate frequencies of both hybrids were shifted to lower values in comparison with those of free polymer indicating the interactions between ferrite particles and calcium alginate. The biological activity tests and MRI investigation results revealed the potential of using the obtained hybrid materials as contrast agents.
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页码：245 / 252
页数：8
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