Fatemeh sadat hosseini - Young Researchers Club, Shiraz Branch, Islamic Azad University, Shiraz, Iran
Yousof Jahani - Faculty of Polymer Processing, Iran Polymer and Petrochemical Institute, Tehran, Iran
Noradin Goudarzian - Department of Polymer Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
Aida Valavi - Department of Polymer Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran

Polypropylene (PP) is the most attractive polyolefins because of its good mechanical properties and low price. The lack of reactive groups in the polypropylene ,its high crystallinity and low surface energy (due to the lack ofchemical functionality) explain the incompatibility with other polymers[1-2]. The functionalization of polyolefin has been an interested issue in many research works [3]. A general method to change partially the chemistry/polarity of thispolymer is free radical- initiated grafting of polar vinyl monomers onto the polymers [4]. In this work the hybrid of n-bythyl acrylate and MethylMethacrylate are copolymerised and grafted on and compatibilised with PP in the presence of an initiator through a reactive mixing process. in