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Fields & Applications Spectroscopy, Mass Spectrometry, Technology, Data Analysis, Petrochem, Environmental, Materials

How to Maximize Absolute Molecular Weight Measurement Accuracy: Synthetic Polymers

How to Maximize Absolute Molecular Weight Measurement Accuracy: Synthetic Polymers

The molecular weight, molecular weight distribution and size of three common polymers are measured using OMNISEC. This information can provide insight into the physical properties and behavior of these synthetic polymers.

Introduction

The physical properties and behavior of polymers depends strongly on the properties of the polymer molecules themselves. Molecular weight and molecular weight distribution, molecular size and structure all affect how the material will behave. By understanding and controlling these properties, polymer manufacturers can control polymer production and quality. Historically, accurate measurement of polymer molecular weight has been dependent on having standards of the same polymer but the introduction of advanced detection techniques, such as light scattering and intrinsic viscosity, have made absolute measurements possible.

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. Its new design means it is capable of making these measurements with less sample and lower molecular weights than ever before.

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