Materials Science and Technologies

Polyurethanes are commonly prepared from polyols, diisocyanates and chain extenders. The polyols are polyesters, polyethers or polycarbonates, while the chain extenders are low molecular weight diols or diamines. In general only a limited number of diisocyanates are used, such as toluene diisocyanate, methylene diphenyl diisocyanate (MDI), hydrogenated MDI and hexamethylene diisocyanate. The first chapter of…

This book discusses the study of simulating the growth of a thin film by chemical vapor deposition (CVD) processes. In recent years, due to the research in producing high-temperature films by depositing low pressures, the processes have increased and understanding the control mechanism of such processes has become very important. An underlying hierarchy of models…

Thermoplastics composites are widely used nowadays. Their matrices are characterized by their aptitude to be repeatedly melted by heating and solidified by cooling, and this in a reversible way. The reinforcement add rigidity and strength to the matrix, thus making a material combining the properties of both constituents. Thermoplastic composites have become an area of…

Introducing the Generalized Molecular Crystal Model, as a more realistic model for the study of the small polaron transport in disordered materials, in the book the “microscopic” kinetics of small polaron transport is fully described. The percolation theory bridges smoothly the gap between the “microscopic” mechanisms responsible for the small polaron site-to-site transport, and the…