Agilent Analysis of Polystyrene Stars by GPC Viscometry with the 390-LC Multi Detector Suite (MDS)

About this manual

This document details the analysis of star-branched polystyrene polymers synthesized via a 'core first' approach. The study utilizes Gel Permeation Chromatography (GPC) combined with a concentration detector and a viscometer to characterize the molecular weight and structure of 5-, 14-, and 21-arm polymers.

The Agilent 390-MDS Multi Detector Suite is highlighted as an ideal tool for extracting additional information from polymers. The note presents experimental conditions, including the use of PLgel MIXED-C columns and THF eluent, and discusses results regarding molecular weight averages, intrinsic viscosity, and the calculation of contraction factors to determine the number of arms.

What's inside

• Introduction
• Materials and Methods
• Results and Discussion
• Universal Calibration
• Molecular Weight Averages
• Mark-Houwink Plots
• Contraction Factors
• Conclusion

Specifications

Frequently asked questions

What is the flow rate used for the analysis?

The analysis uses a flow rate of 1.0 mL/min.

At what temperature are the detectors set?

All detectors are set at 40 °C.

What is the temperature of the eluent?

The eluent temperature is 40°C.