Covering this new class of polymeric systems needed for advanced applications, the first part of this practical textbook treats miscibility in molecular composites, their processing, structure and properties, and phase separation. The middle section goes on to look at self reinforced blends of liquid crystalline and thermoplastic polymers, their compatibility, as well as the rheology, processing, structure and properties of self reinforcing blends. The final part addresses molecular nanocomposites and their miscibility and phase separation, as well as the processing, structure and properties of molecular nano composites and their systems.