Biopolymers | Quality Control of Biopolymers
Intrinsic viscosity and molar mass determination are important and easy methods for quality control of biopolymers such as pectin, xanthan gum, hyaluronic acid or chitosan. Lovis combines precise and fast viscosity measurements for subsequent molar mass calculations.
According to IUPAC, biopolymers are substances that are composed of one type of biomacromolecules, i.e., macromolecules that are formed by living organisms. This definition includes proteins, nucleic acids, and polysaccharides.
Quality control of (bio)polymers is necessary to ensure good properties for processing and application. The molar mass of a polymer is important as it affects the physical, chemical, and biological properties of the product. Viscosity determination in dilute solution is a simple and fast method to determine the molar mass of a polymer.
This application report describes measurements of biopolymer xanthan gum and pectin samples with Anton Paar’s Lovis rolling ball viscometer.The implemented polymer software allows automatic calculation of all desired polymer parameters such as intrinsic viscosity and viscosity average molar mass. A combination with a DMA density meter additionally allows measuring dynamic and kinematic viscosity.
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