Determination of The Molecular Weight and Intrinsic Viscosity of Polystyrene Using Viscometric Method

Abstract

This study focuses on the determination of the molecular weight and intrinsic viscosity of polystyrene utilizing a viscometric method. Polystyrene are widely employed in various industrial applications, and understanding their molecular characteristics is crucial for optimizing their performance. The experimental approach involves the preparation of polystyrene with varying compositions. A series of solutions is created by dissolving these blends in a suitable solvent, and their viscosities are measured at different concentrations. The intrinsic viscosity is determined by extrapolating the viscosity data to zero concentration. The Mark-Houwink-Sakurada equation is employed to establish the relationship between intrinsic viscosity and molecular weight. By fitting experimental data to this equation, the molecular weight of the polystyrene is determined. This method offers a reliable and cost-effective approach for characterizing the molecular properties of polymer. The results provide valuable insights into the molecular weight distribution and intrinsic viscosity of the polystyrene, aiding in the optimization of processing conditions and end-use applications. Additionally, the viscometric method outlined in this study presents a practical and efficient technique for assessing the molecular characteristics of polymer blends, with potential applicability to other polymer systems.