Agilent Technologies provided an application compendium that introduces detailed methods for the analysis of rubbers by GPC/SEC, including natural rubber, synthetic rubber, polydimethyl siloxane, etc.
This document is an application compendium by Agilent Technologies focusing on the analysis of elastomers, specifically natural and synthetic rubbers, using Gel Permeation Chromatography (GPC) or Size Exclusion Chromatography (SEC). It explains the properties of elastomers and how molecular weight distribution affects their physical characteristics.
The text describes specific analytical methods and equipment configurations, including the use of the Agilent PL-GPC 50 Integrated GPC/SEC System. It highlights the benefits of using Agilent's PLgel columns and various detection methods, such as evaporative light scattering (ELSD), triple detection (viscometer and light scattering), and conventional refractive index detection, to analyze complex polymer structures and additives.
| Temperature range | ambient to 220 °C |
|---|---|
| Column efficiency | >35,000 plates/meter |
| Molecular weight range | up to 10,000,000 daltons |
| Column dimensions | 300 x 7.5 mm |
| Flow Rate | 1.0 mL/min |
| Injection Volume | 200 yL |
| Temperature | 50°C |
It assesses molecular weight distribution and structure without relying on column calibrations.
The Agilent 380-ELSD evaporative light scattering detector is recommended for increased sensitivity.