This application note discusses the analysis of polyols by GPC with viscometry. Polyols are polymeric species containing multiple hydroxyl functionalities typically used as precursors to other polymers. Understanding the molecular structure of polyols is important in controlling their application. Two different samples of polyol were analyzed using an Agilent GPC system, and their molecular weight distribution was determined.
The document details the analysis of two different polyol samples to understand their molecular structure and weight distribution. The study highlights how oligomeric chain distributions influence polymer properties and reaction rates.
The analysis was performed on an Agilent PL-GPC 50 Plus integrated GPC system equipped with a differential refractive index detector, a PL-BV 400RT viscometer, and ResiPore columns. Results indicated that the viscometer chromatogram detected high molecular weight components not visible in the refractive index trace.
The system is designed to operate from ambient conditions up to 50 °C.
The analysis was performed with a flow rate of 1 mL/min at a temperature of 40°C.
The standard configuration includes three ResiPore columns with dimensions of 300 x 7.5 mm.