Comparison of organic – inorganic nano-compositions created by different deformation – chemical techniques

Abstract

Comparative studies of compositions from polystyrene and inorganic crystals of cesium sulfate and cesium iodide obtained by different methods gave new experimental facts and versions about particularities of structures and properties of these materials. The methods of creation of these compositions were based on two deformation – chemical techniques: solidification of micro-fibers from solutions of polystyrene with cesium sulfate and cesium iodide particles and introduction of polystyrene as the doping substance into single crystals of cesium iodide and potassium chloride by means of a ball rolling. In both cases micro- and nanosize singularities of the mass transfer were observed during the forming of these compositions. The microfibers formed by solidification of doped solutions of polystyrene turned out to be split to sets of nano – filaments. In the process of the dynamical centrifuging they formed the bundles parallel to the axis of the fiber, whereas the slow pulling of the fibers from the solution with a thin glass stick created saw-like chains of short pieces of the nano-filaments going along the axis of the fiber. These geometries were regulated by the ratios of compressive and tensile internal stresses, the chemical content of the components, lengths of the polystyrene molecules, viscosity of the solution. Superfast and superdeep mass transfer in the form of nano- and micro-filaments observed in our experiments is attributed to the soliton-like propagation provided by non-linear changes of the properties of the matrix in the vicinity of the filament. Hence wide sets of various nanostructures required by new trends of electronics, optics, etc. can be prepared by rather economic techniques.