The influence of magnetic nanoparticle concentration with dextran polymers in agar gel on heating efficiency in magnetic hyperthermia
Andrzej Skumiel, Katarzyna Kaczmarek, Dorota Flak, Michal Rajňák, Iryna Antal, Hubert Brząkała
Abstract
The article presents the results of research on the effect of magnetic hyperthermia performed on agar gel samples containing magnetite nanoparticles coated with dextran polymers for different molar weight M (150 kDa, 70 kDa, and 40 kDa). Regardless of the difference in molar dextran weights, these samples differed in a mass concentration of nanoparticles in the ferrogel C0 (1.602 mg/cm3, 2.506 mg/cm3, 3.311 mg/cm3, and 4.218 mg/cm3). In the case of the highest magnetic field value H (20 kA·m−1), the specific loss power SPL reaches 70 W·g−1 for nanoparticles with 150 kDa dextran at a concentration of nanoparticles C0 = 1.602 mg/cm3. An oscillating magnetic field with an amplitude up to 20 kA·m−1 and a frequency of 357 kHz was used in the study.