We know that with increasing molecular weight of polymer,Entaglement between chain increases which creates small matrix of nanometer size in between these entangled chain if such matrix occupied by nanoparticle these nanoparticle will work as bearing for long chains of polymer and causes easier chain sliping effect which could lead polymer to decrease in its viscosity with icreasing polymer molecular weigh which we can say shear thining effect such effect generated by nanoparticle will usefull to process highly viscous polymer easily.