Mostafa Ranjbar - Department of Chemical Engineering, Polymer Group, Isfahan University of Technology, Isfahan,Iran.
Rouhollah Bagheri - Department of Chemical Engineering, Polymer Group, Isfahan University of Technology, Isfahan,Iran
Tayebeh Behzad - Department of Chemical Engineering, Polymer Group, Isfahan University of Technology, Isfahan, Iran

In this study, a hybrid of cellulose nanofiber (CNF) and reduced graphene oxide (RGO) were prepared via layer by layer assembly method. This hybrid as a new type of reinforcing agent for polymer composites evaluated by means of mechanical and thermal properties. The average tensile strength and modulus of elasticity of RGO-CNF hybrids are higher than the CNF. Also RGO-CNF hybrids show improved thermal stability in compare with pure CNF. The AFM images show that the Rrms (surface root-mean-square roughness) of RGO-CNF hybrids increased, indicating that the new hybrids in compare with pure CNF, can provide better mechanical interlocking, when incorporate with polymer matrix. Therefore, hybridizing of RGO nanosheets and cellulose nanofibrils is a promising feat, which led to noticeable enhancement in mechanical and thermal properties

Cellulose nanofiber- Graphene oxide- Layer by layer assembly- Mechanical properties-Thermal properties