On the possibility of using short chain length mono-carboxylic acids for stabilization of magnetic fluids

• DOI: 10.1016/j.jmmm.2006.11.155
• Publication Date: 2006-12-07T18:04:38Z
• Authors: Mikhail V. Avdeev; Doina Bica; Ladislau Vékás; Oana Marinica; Maria Balasoiu; Victor L. Aksenov; László Rosta; Vasil M. Garamus; Andreas Schreyer
• Keywords: 02 engineering and technology; 0210 nano-technology

Short chain length mono-carboxylic acids (lauric and myristic acids) are used to coat magnetite nanoparticles in non-polar organic liquids, which results in highly stable magnetic fluids. The new fluids are compared with classical organic fluids stabilized by oleic acid (OA). Magnetic granulometry and small-angle neutron scattering (polarized mode) reveal a great difference in the particle size distribution function for the studied magnetic fluids, particularly a decrease in the characteristic particle radius of magnetite when lauric and myristic acids are used instead of OA.