Application as Viscosifier

As previously discussed, the intrinsic viscosity of a polymer solution is predicted by the Mark-Houwink-Sakurada relationship  

the higher the molecular weight, the higher the intrinsic viscosity of the polymer in solution will be. 

The rheological investigations were conducted using a Controlled-Stress TA Instruments AR-1000 Advanced Rheometer. The temperature of the system was maintained at 30 °C throughout the experiments. 

When the polymers were dissolved in solvent, the solvent attached itself to the polymers through hydrogen bonding. The shear rate of the graft copolymer (CMS-g-PAM) is more than the corresponding polysaccharides. This is explained on the basis of the presence of longer PAM chains in the graft copolymer. 

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