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Open AccessArticle10.12693/aphyspola.121.1302

Magnetic Properties of Biocompatible Magnetic Fluid after Electron Irradiation

Natália Tomašovičová,Ivan Haysak,M. Koneracká,J. Kováč,M. Timko,Vlasta Závišová+5 more-2012-05-01-Acta Physica Polonica A
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TL;DRAbstract

The magnetic particles in the water-based magnetic uids were sterically stabilized by natrium oleate to prevent their agglomeration and consequently the adsorption of poly-ethylene-glycol (PEG) was carried out to improve the biocompatibility of the magnetic particles. Two sets of samples were prepared. The rst set of the samples was with dierent molar weight of PEG (Mw = 400, 1000, 10 000 and 20 000) at the constant weight ratio of PEG/Fe3O4 = 0.25 and the second one was with dierent weight ratio of PEG/Fe3O4 and constant molar weight of PEG (Mw = 1000). The samples were irradiated with 20 Gy. The same reduction of saturated magnetization (about 10%) after electron irradiation with 20 Gy was observed for all prepared samples.

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The magnetic particles in the water-based magnetic uids were sterically stabilized by natrium oleate to prevent their agglomeration and consequently the adsorption of poly-ethylene-glycol (PEG) was carried out to improve the biocompatibility of the magnetic particles. Two sets of samples were prepared. The rst set of the samples was with dierent molar weight of PEG (Mw = 400, 1000, 10 000 and 20 000) at the constant weight ratio of PEG/Fe3O4 = 0.25 and the second one was with dierent weight ratio of PEG/Fe3O4 and constant molar weight of PEG (Mw = 1000). The samples were irradiated with 20 Gy. The same reduction of saturated magnetization (about 10%) after electron irradiation with 20 Gy was observed for all prepared samples.

Keywords

Biocompatible materialMaterials scienceIrradiationElectronPhysicsNuclear physicsBiomedical engineeringMedicine

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