Synthesis and characterization of iron oxide superparticles with various polymers

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:515

Article

Mansur, Shomit¹  Rai, Anish²  Holler, Robert A.³  Mewes, Tim²  Bao, Yuping¹ 

[1] Univ Alabama, Chem & Biol Engn, Box 870203, Tuscaloosa, AL 35487 USA

[2] Univ Alabama, Dept Phys & Astron, Box 870324, Tuscaloosa, AL 35487 USA

[3] Univ Alabama, Analyt Facil Ctr, Tuscaloosa, AL 35487 USA

关键词: Iron oxide superparticles;    Solvothermal synthesis;    Polymer coating;    Magnetic separation;   

DOI  :  10.1016/j.jmmm.2020.167265

来源: Elsevier

【 摘 要 】

Iron oxide superparticles referring to a cluster of smaller nanoparticles have recently attracted much attention because of their enhanced magnetic moments but maintaining superparamagnetic behavior. In this study, iron oxide superparticles have been synthesized using a solvothermal method in the presence of six different polymers (e.g., sodium polyacrylate, pectin sodium alginate, chitosan oligosaccharides, polyethylene glycol, and polyvinylpyrrolidine). The functional group variation in these polymers affected their interactions with precursor iron ions, and subsequently influenced crystalline grain sizes within superparticles and their magnetic properties. These superparticles were extensively characterized by transmission electron microscopy, dynamic light scattering, x-ray diffraction, Fourier transform infrared spectroscopy, and vibrating sample magnetometry.

【 授权许可】

Free