The performance of OMNISEC, Malvern Instruments’ new gel permeation chromatography/size exclusion chromatography (GPC/SEC) system, is demonstrated in a series of recently released application notes which highlight the sensitivity of the system in synthetic polymer analysis.  The OMNISEC platform brings together highly efficient and precise sample separation in the OMNISEC RESOLVE module with a fully integrated, high sensitivity multi-detector array in the OMNISEC REVEAL module. A complete OMNISEC system delivers the accurate molecular weight and molecular size measurements and detailed structural information needed to drive synthetic polymer research.

The polymer industry is actively engaged in developing new materials with key performance attributes. Priorities include the introduction of renewable polymers to replace those derived from fossil fuels, formulating materials with improved performance to volume gearings for packaging applications, and enhancing polymer recyclability or biodegradability. Polymer scientists require absolute molecular weight, size and structural information in order to manipulate polymer properties to meet these goals.

The new application notes include ‘Measurements of absolute molecular weight of synthetic polymers using OMNISEC’ which demonstrates the ability of the system to accurately measure the  molecular weight of polystyrene, polyvinyl chloride (PVC) and polymethyl methyacrylate (PMMA) with no need for relevant calibration standards. ‘The Mark–Houwink plot – Differentiation of Branching and Composition’ demonstrates how the Mark-Houwink plot may be used to determine and compare polymer structure. The data presented show that OMNISEC is able to detect differences in branching with excellent levels of sensitivity, through its powerful light scattering detector and viscometer.

For more information on OMNISEC and to download the application notes in full, visit http://www.malvern.com/mark-houwink and http://www.malvern.com/molecular-weight.

 

About Malvern Instruments

Malvern provides the materials and biophysical characterization technology and expertise that enables scientists and engineers to understand and control the properties of dispersed systems. These systems range from proteins and polymers in solution, particle and nanoparticle suspensions and emulsions, through to sprays and aerosols, industrial bulk powders and high concentration slurries. Used at all stages of research, development and manufacturing, Malvern’s materials characterization instruments provide critical information that helps accelerate research and product development, enhance and maintain product quality and optimize process efficiency.

Our products reflect Malvern’s drive to exploit the latest technological innovations and our commitment to maximizing the potential of established techniques. They are used by both industry and academia, in sectors ranging from pharmaceuticals and biopharmaceuticals to bulk chemicals, cement, plastics and polymers, energy and the environment.

Malvern systems are used to measure particle size, particle shape, zeta potential, protein charge, molecular weight, mass, size and conformation, nanoparticle size and count, rheological properties and for chemical identification, advancing the understanding of dispersed systems across many different industries and applications.

Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, Mexico, China, Japan and Korea, a joint venture in India, a global distributor network and applications laboratories around the world. www.malvern.com