In-line impedance monitoring for real-time molecular weight assessment
Advanced in-line monitoring using interdigital electrodes and impedance spectroscopy for real-time molecular weight assessment, ensuring high sensitivity and accuracy in dynamic environments.
Overview
The in-line impedance monitoring solution offers real-time molecular weight assessment using interdigital electrodes (IDE) integrated with impedance spectroscopy. This innovative method provides high sensitivity and accuracy in detecting molecular weight changes, especially in dynamic environments under high temperature and pressure. By scanning a wide frequency band up to 1 MHz, the solution deduces molecular weight through equivalent circuit analysis and modeling, making it ideal for applications in polymer processing and quality control.
Technical specifications
Key features:
- Utilizes interdigital electrodes (IDE) integrated with impedance spectroscopy for precise measurements.
- Capable of scanning frequencies up to 1 MHz within seconds.
- High sensitivity and accuracy in assessing molecular weight changes.
- Suitable for high-temperature (150°C-350°C) and high-pressure (10-150 bars) environments.
- Calibration with standard methods such as light scattering, Gel Permeation Chromatography (GPC), and rheometry.
- Impedance spectrum analysis includes dielectric, viscoelastic, and ionic transport properties of polymers.
Technology readiness level
Currently at TRL 2, this technology is in the early stages of development, with ongoing lab and field measurements. Future validation involves integration with industrial polymer ejection systems and extensive data analytics to enhance prediction models using machine learning algorithms.
About University of Tennessee, Knoxville
The University of Tennessee, Knoxville is a comprehensive public land‑grant research university—the flagship of the UT System—classified as R1 and serving more than 40,000 students. Industry engagement is anchored by the UT Research Park at Cherokee Farm, where corporate R&D and joint university–national lab facilities sit just across the river from campus, including assets such as the Volkswagen Innovation Hub and an AT&T 5G testbed. UT’s long‑standing partnership with Oak Ridge National Laboratory—via UT‑Battelle and the UT–Oak Ridge Innovation Institute—gives companies streamlined access to national lab capabilities, talent, and joint programs. A statewide Extension network and established co‑op programs connect companies to faculty expertise and student talent across Tennessee and into federal labs. Research is supported by competitive federal sponsors such as the National Science Foundation and the U.S. Department of Energy. Commercialization is managed by the University of Tennessee Research Foundation, which handles IP, licensing, and startup formation.
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