Problem solving nanocomposites

The primary problem in synthetic and natural nanocomposites is the establishment of a correlation between the molecular structure and the properties of the materials obtained, which indeed is a part of the fundamental content-structure-property problem. It seems to us that one of the ways of solving this problem is to investigate the catalytic properties of polymer-immobilized metal complexes, clusters and nanoparticles in different organic synthesis reactions as a function of their molecular organization (see Chapters 11 and 12). 

The structure-property relationships within hybrid nanocomposites are a fim-damental problem in modem chemistry and physics. A great deal needs to be done before this problem is solved. 

However, there are also problems to be solved with nanocomposites. For example, in certain cases, the thermal stability of the organoclays must be improved. This is due to rapid thermal decomposition of the quaternary ammonium compounds with long alkylic chains, because it is known that they present the drawback of poor thermal stability at >200 °C [3, 37 0]. 

On the basis of the theory of numerical methods and mathematical modeling the problem of the calculation and forecast of the distribution of the temperature field in a two-phase nanocomposite environment is solved. The mathematical statement of the problem is formulated as the integral equation of thermal balance with a heat flux taken into account, which changes according to Fourier s law. Jumps of enthalpy and heat conductivity coefficient are considered. Various numerical schemes and methods are examined and the best one is selected - the method of control volume. Calculation of the dynamics of the temperature field in the nanostructure is hold using the software. 

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