Nanoparticles Surface Engineering of Ultradispersed Polytetrafluoroethylene

Abstract

In this work we demonstrate that it is possible to create new optical and magnetic materials based on metal-containing nanoparticles stabilized on the surface of polytetrafluoroethylene (PTFE) nanogranules. The magnetic and optical properties of these materials have been investigated. The materials were prepared by a method of thermal decomposition of metal compounds in the heated polytetrafluoroethylene-oil system. Transmission electron microscopy data show that the diameter of the particles is 3–6 nm. Magnetic studies show that for the obtained nanoparticles, the blocking temperature and the magnetic anisotropy is highest for homometallic nanoparticles; this fact makes it promising material for the different magnetic applications. The optical properties of nanomaterials CdS/nanogranules of PTFE are specified. The size and core-shell structure of the nanomaterials has been confirmed by TEM and X-ray diffraction.