This document introduces the analysis methods of low molecular weight resins from Agilent Technologies, Inc., including molecular weight distribution, composition, crystallinity and aggregation.
This document serves as an application compendium for the analysis of low molecular weight resins and prepolymers using Gel Permeation Chromatography/Size Exclusion Chromatography (GPC/SEC). It addresses the challenges of analyzing highly functional polymers that may interact with column packing materials and highlights the suitability of Agilent's GPC/SEC columns for these applications.
The text covers the characterization of both low and high polarity resins, including polyester polyols, phenolic resins, epoxy resin oligomers, and melamine resins. It specifically recommends the PlusPore range of columns (PolyPore, ResiPore, MesoPore, OligoPore) for their high resolution, wide pore size distribution, and solvent compatibility, providing examples of chromatograms for various sample types.
| Temperature range | ambient to 220 °C |
|---|---|
| Column exclusion limit (MesoPore) | 25,000 molecular weight |
| Column minimum efficiency (MesoPore) | 80,000 plates/meter |
| ResiPore application range | material above 400,000 molecular weight unlikely |
Gel permeation chromatography/size exclusion chromatography (GPC/SEC) is a well-known technique for assessing the molecular weight distribution of polymers.
The PlusPore series of columns, including PolyPore, ResiPore, MesoPore, and OligoPore, are designed for high resolution GPC.
They tend to be highly functional and contain reactive groups, which can make GPC/SEC analysis challenging due to potential interactions with the column packing.