Viscotek has published a technical article that describes how High Temperature GPC/SEC allows scientists to determine the molecular weight and branching structure of polyolefins.
Polyethylene and polypropylene are polyolefins used in large amounts in industry.
Linear or branched polyolefins can be produced, depending on the process and catalyst used in the manufacturing process.
Polyethylene has at least three polymer types: HDPE (high density polytheylene), LDPE (low density polyethylene) and LLDPE (linear low density polytehylene).
The article describes how the Viscotek Model 350 High Temperature GPC/SEC-System can determine molecular weight distribution and branching structure of a range of polyethylene samples to determine the polymer type and likely properties.
The Viscotek Model 350 HT-GPC system provides: absolute molecular weight without extrapolation or correction; molecular size and intrinsic viscosity, as well as information on branching, structure and aggregation.
The Model 350 system includes a High Temperature Triple Detector Array (HT-TDA) with an automated sample preparation and delivery system and Omnisec GPC software for complete system control, data acquisition and processing.
The Viscotek Model 350 HT-TDA combines low angle light scattering with viscometry and concentration for complete macromolecular characterisation.
All detectors reside in a temperature-controlled oven compartment with space for the analytical GPC columns.
For more information on the Model 350 HT-GPC system and a copy of the technical article, please contact Viscotek.
