In-line impedance monitoring for real-time molecular weight assessment

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.