Microstructure analysis of different polymers can be achieved by using Cone/Plate rheometer.In this instrument we can do analysis at controlled shear rate (CSR) or controlled shear stress (CSS). By using CSR mode we can measure dynamic viscosities and we know that viscosity depends on resisting ability of your polymer sample and ultimately on how greater the secondary interaction is there in your polymer.So onnce you know about Gain modulus (Viscoelastisity) and loss Modulus (Viscosity) you can predict extent of microstructure formation in polymer