Physical investigations of a ferrofluid based on hydrocarbons

Since in future the applications of the magnetic fluids will focus more toward the biological uses, where the ultra-fine ferrophase is particularly important for the penetration of the cell structures, the size distribution of the magnetic colloids remains a major problem, as in the case of the ferrofluid analyzed here. The electron microscopy, the thermogravimetric investigation and the infrared spectral analysis evidenced some of the physical features that are essential for its small diameter size.