This article introduces the GPC analysis method and results of polybutadienes. Polybutadienes are a type of synthetic rubber commonly used in the production of tires and car parts due to their high temperature and wear resistance. Triple detection GPC method is employed to assess the molecular weight distribution and molecular structure of polymers without relying on column calibrations. This is important for analyzing complex materials.
This document details the analysis of polybutadienes, a type of synthetic rubber, using the Agilent PL-GPC 50 Integrated GPC/SEC System. The analysis employs triple detection size exclusion chromatography (SEC), which utilizes a concentration detector, a viscometer, and a light scattering detector to assess molecular weight distribution and structure without relying on column calibrations. This method is particularly useful for complex materials where structurally similar standards are unavailable.
The specific experimental conditions involved a sample of polybutadiene analyzed at 30 °C using two Agilent PLgel 5 µm MIXED-C columns. The system was equipped with a refractive index detector, a PL-BV 400 four capillary bridge viscometer, and a dual angle light scattering detector. The results demonstrated the system's ability to generate molecular weight distributions and Mark-Houwink plots to assess polymer structure.
| Temperature Range | ambient to 50 °C |
|---|---|
| Column Type | 2 x Agilent PLgel 5 µm MIXED-C |
| Column Dimensions | 7.5 x 300 mm |
| Injection Volume | 100 µL |
| Eluent | THF |
| Flow Rate | 1 mL/min |
| Sample Concentration | 2 mg/mL |
Triple detection SEC employs a concentration detector, a viscometer, and a light scattering detector to assess polymer properties without column calibrations.
It is important when analyzing complex materials for which no structurally similar standards are available.
The analysis uses a refractive index detector, a PL-BV 400 four capillary bridge viscometer, and a dual angle light scattering detector.