Mohammad Reza Manafi - Department of Applied Chemistry, Islamic Azad University, South Tehran Branch, Tehran, Iran
Parvin Ehsaninamin - Faculty of Chemistry, Tehran North Branch of Islamic Azad University, Tehran, Iran
Pedram Manafi - Department of Polymer Engineering & Color Technology, Amirkabir University of Technology (Tehran Polytechnic), Mahshahr Campus, Mahshahr
Ismaeil Ghasemi - Plastic Department, Iran Polymer and Petrochemical Institute

In this work, the effect of the presence of graphene nanoplatelets (GNp) and its modification on the crystallization of Poly (lactic acid) was studied. Functionalization of GNp was accomplished by acid treatment. Nanocomposite samples were prepared by solution method containing neat and functionalized graphene. Nonisothermal of the samples were studied using differential scanning calorimetry (DSC) at heating rates of 2, 4, 6 and 10 °C/min. Also, non-isothermal analysis pinpointed the fact that crystallization temperature (Tc) of nanocomposites has increased compared to neat PLA by 11-21 °C.

PLA, nano graphene platelets, Non-isothermal crystallization