Alireza Hassanjani Roushan - Department of Chemistry, Faculty of Science, Islamic Azad University, Shahrood Branch, Shahrood, Iran
Ahmad Motahari - Faculty of Chemistry, University of Mazandaran, P. O. BOX 453, Babolsar, Iran
Abdollah Omrani - Faculty of Chemistry, University of Mazandaran, P. O. BOX 453, Babolsar, Iran

Semi-crystalline polymers consist of crystalline and amorphous domains have been extensively studied due to their practical applications. These kinds of polymers includepolyethylene, polypropylene, polystyrene, polyamide, poly (ethylene terephthalate), poly(trimethylene terephthalate) andpoly(vinyl alcohol) (PVA) [1]. Semi-crystalline polymer nanocomposites fabricate in order to improve the physical properties of pristine polymers. In recent years, Polyhedraloligomeric silsesquioxane (POSS) based materials have been studied widely. POSS can be effectively incorporated intopolymers by copolymerization, grafting or even blending through traditional processing methods [2,3].