Gas Solubilities in Polymer Melts Using Raman Spectroscopy

Jander JH, Schmidt PS, Klein T, Fröba AP (2025)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2025

Journal

Macromolecules American Chemical Society

Book Volume: 58

Pages Range: 7795-7801

Journal Issue: 15

DOI: 10.1021/acs.macromol.5c01408

Abstract

The quality and predictive power of bubble growth models developed for physical polymer foaming processes is highly dependent on the thermophysical properties of the corresponding mixtures consisting of the polymer melt and the dissolved blowing agent. Therefore, accurate knowledge of the concentration of the blowing agent in the polymer melt is essential for both laboratory-scale experiments and technical applications. In this work, the application of Raman spectroscopy for the characterization of the amount of blowing agent in polymer melts is demonstrated for mixtures consisting of carbon dioxide (CO2) dissolved in polystyrene (PS) melts at temperatures up to 534 K and pressures up to 10 MPa. In this study, the application of Raman spectroscopy allowed the contactless determination of the mass fraction of CO2dissolved in PS melts (wCO2) with average expanded absolute uncertainties of U(wCO2) = 0.0021 after calibration at a single isotherm.

Authors with CRIS profile

Julius Jander Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Tobias Klein Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Andreas Paul Fröba Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP)

Additional Organisation(s)

Erlangen Graduate School in Advanced Optical Technologies (SAOT)

Related research project(s)

Influence of the material properties of blowing agent loaded melts on the formation and structure of polymer foams April 1, 2023 - March 31, 2026

How to cite

APA:

Jander, J.H., Schmidt, P.S., Klein, T., & Fröba, A.P. (2025). Gas Solubilities in Polymer Melts Using Raman Spectroscopy. Macromolecules, 58(15), 7795-7801. https://doi.org/10.1021/acs.macromol.5c01408

MLA:

Jander, Julius Hans, et al. "Gas Solubilities in Polymer Melts Using Raman Spectroscopy." Macromolecules 58.15 (2025): 7795-7801.

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