ResourceSeparations
Synthetic Polymers: Maximizing Absolute Molecular Weight Measurements Accuracy with Malvern’s OMNISEC System
6 Sept 2015Manufactures are able to control polymer production and quality by understanding the physical properties and behaviours such as molecular weight and molecular weight distribution, molecular size and structure. GPC/SEC (gel-permeation or size-exclusion chromatography) is the most commonly used tool for assessing these parameters. Malvern’s OMNISEC system is a completely new multi-detector GPC system that combines light scattering, refractive index (RI), ultraviolet (UV) and intrinsic viscosity (IV) detectors to generate a large amount of information about a sample simultaneously. In this application note, the molecular weight, molecular weight distribution and size of three common polymers are measured using the OMNISEC system.