Poly (vinyl chloride) (PVC) is now one of the world’s major polymers due to its superior mechanical and physical properties. However, it must be combined with a number of additives in order to optimize properties[1]. Plasticizer is a kind of such additives, which is often used in PVC for increasing its processability, flexibility, and low temperature properties[2,3]. Generally, plasticizers are low molecular weight liquids, and only seldom are they low- or high- molecular weight solids[4]. The most widely used low molecular weight plasticizer is dioctyl phthalate (DOP)[5]. However, the low molecular weight plasticizers may migrate from materials, leading to a rigidification of the material thus becoming unable to serve. At the same time, the migration of plasticizers limits materials’ applications especially in the pharmaceutical, medical and food packaging fields