Magnetic Behavior of O-Carboxymethylchitosan Bounded With Iron Oxide Particles

被引：5

作者：

Dusza, A. ^{[1
]}

Wojtyniak, M. ^{[1
]}

Nedelko, N. ^{[1
]}

Slawska-Waniewska, A. ^{[1
]}

Greneche, J. M. ^{[2
]}

Rodrigues, C. A. ^{[3
]}

Burger, C. ^{[3
]}

Stringari, C. ^{[3
]}

Debrassi, A. ^{[3
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[2] Univ Maine, Phys Lab, UMR CNRS 6087, F-72085 Le Mans 9, France

[3] Univ Vale Itajai, NIQFAR CCS, BR-88302202 Itajai, SC, Brazil

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 02期

关键词：

Iron oxide nanoparticles; magnetic O-carboxymethylchitosan; superparamagnetism; NANOPARTICLES; CHITIN;

D O I：

10.1109/TMAG.2009.2032518

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two magnetic chitosan derivatives of O-carboxymethylchitosan bounded with iron oxide particles have been prepared by in situ coprecipitation and incorporation methods. The investigations were focused on structural and magnetic aspects-morphology of iron oxide particles and overall magnetic behavior of these two magnetic chitosan microspheres. It has been shown that the magnetic properties of the sample prepared by the incorporation method are roughly the same as those of a powder of gamma-Fe2O3/Fe3O4 nanoparticles and both are dominated by strong magnetostatic interparticle interactions. In turn, the sample prepared by the in situ method is more susceptible to the temperature increase (resulted in predominant superparamagnetic behavior at 300 K) which is related to smaller particle sizes and better separation of particles with chitosan molecules.

引用

页码：459 / 462

页数：4

共 15 条

[1] Influence of grain size, oxygen stoichiometry, and synthesis conditions on the γ-Fe2O3 vacancies ordering and lattice parameters [J].