Polymer nanocomposites consisting inorganic matter embedded within a polymer matrix on the nanometer length scale are an important class of materials with new commercial and technological applications in the aerospace, automotive, biotechnology, electronic, energy, medical, and optical industries. In addition to the component material properties, the enhanced properties and performance of the nanocomposite depend crucially on the morphology and interfacial interaction between polymer matrix and inorganic nanoparticle. Three dimensional (framework), two dimensional (lamella or platelet), one dimensional (tube/fiber) and zero dimensional (molecular or cluster) like particles have all been used in the fabrication of nanocomposites. Generally 2-D and 3-D lattices offer the richest intercalation chemistry because of their stability and well-defined vacant sites for intercalation reactions and a smart approach to the design and synthesis of nanocomposite materials with unique and predetermined properties. In this study, we chose 2-D layered (montmorillonite and layered double hydroxide) and 3-D (mesoporous ailica) particles to study the particle dispersion and properties of polymer nanocomposites.