Dear Muhammad Muneeb Ahmad, intrinsic viscosity is obtained at high dilution, in a good solvant, which lead to fully extended chain dimensions. It is assumed that under such circomstances, coils, entanglements, and other structures, all disapear. These are almost the most important under which Mark-Howinck-Sakurada equation was developped. My Regards

Dear Muhammad Muneeb Ahmad, the following documents are in support to my previous answer. My Regards

https://doi.org/10.1016/S0096-5332(08)60087-9

https://doi.org/10.1016/j.polymer.2005.10.019

Hi;

Plus, the intrinsic viscosity describes how the behaviour of a polymer in solution and its molecular structure (size and shape) can change the rheological properties of the solution. The solution is considered to be dilute (i.e. consisting of individualized polymer chains in solution, without significant polymer-polymer intermolecular interaction).

With my best regards

Dear all, attached files are dealing with the derivations and conditions for the 'unperturbed dimensions' necessary for acurate intrisic viscosity calculation. My Regards

Please Go To This Link:

https://www.waters.com/webassets/cms/library/docs/950361.pdf