Intrinsic Viscosity Analyzer (IVA)

The Reliable and Automated Way to Measure Intrinsic Viscosity of Polyolefins

The Polymer Char IVA Intrinsic Viscosity Analyzer is a reliable, safe, and automated instrument that measures the intrinsic viscosity (IV) of polyolefins in solution. It is recommended for samples of the type polyethylene and polypropylene. Intrinsic viscosity is a valuable measurement for polymer characterization, as it can be used to indirectly determine the average molar mass of a polymer.

The IVA is based on Polymer Char's recently developed QC platform, which integrates a robust dual-capillary relative viscometer with a high-temperature autosampler. This allows the IVA to analyze a wide range of polymers with IV values from 0.1 dL/g up to over 40 dL/g, such as polyolefins, PET, PAN, PMMA, and others. All of the Intrinsic Viscosity results are in good agreement with the traditional methods of reference.

The IVA is easy to use. The user simply places the vials with polymer into the autosampler's external tray at room temperature. The instrument will then take the vials into the dissolution oven, fill them with solvent, and start the shaking process. Dissolution temperature, shaking intensity, non-oxidative atmosphere with nitrogen, and time can be accurately controlled so that the user can select the optimum conditions to achieve full dissolution while minimizing thermal degradation.

The analysis of polyolefins and other polymers which contain significant C-H content can be further improved by the incorporation of the optional Infrared detector IR4 to accurately quantify the injected polymer’s mass. This option will contribute to higher precision and accuracy of intrinsic viscosity determination.

Another advantage of the instrument is the capillaries and tubing do not require manual washing or rinsing and provide robust and precise viscosity values over time. The unique design of the heated compartment and transfer lines in the instrument ensure that no cold spots are found and that even the most difficult polymers can be analyzed.

The Polymer Char IVA Intrinsic Viscosity Analyzer is the reliable and automated way to measure intrinsic viscosity of polyolefins. If you need to characterize polyolefins, the IVA is the perfect instrument for the job.

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