Abstract

There are various reasons for natural rubber blending. They include lowering the production cost, enhancement of the mechanical and physical properties and the ease of processing. It is widely known that natural rubber exhibits both viscous and elastic behaviour. The difficulty of fabrication of natural rubber is the big deal in the rubber processing industries. In fact, the flow of natural rubber is significantly affected by various factors such as processing time, temperature, applied stress and strain. Furthermore, processability property of natural rubber is also clearly based on types of natural rubber. Therefore, premasticated natural rubber to achieve the appropriate viscosity is necessary for blends of natural rubber with other polymers. In this chapter, the rheological behaviour in terms of processability and melt rheology with respect to tan δ, Mooney viscosity, shear stress and shear viscosity at various shear rates for natural rubber blended with various types of polymer is considered. The chapter is described in the category that is classified into three topics including the rheological behaviour of natural rubber blended with thermoplastics, the rheological behaviour of natural rubber blended with synthetic rubbers and the rheological behaviour of chemically modified natural rubber blended with various types of polymer.

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