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    Rights statement: This is the author’s version of a work that was accepted for publication in Polymer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer, 257, 125285, 2022 DOI: 10.1016/j.polymer.2022.125285

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Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy. / Engelbrecht, Sebastian; Pichot, Vincent; Goepfert, Thomas et al.
In: Polymer, Vol. 257, 125285, 04.10.2022.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Engelbrecht, S, Pichot, V, Goepfert, T, Lin, H & Fischer, BM 2022, 'Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy', Polymer, vol. 257, 125285. https://doi.org/10.1016/j.polymer.2022.125285

APA

Engelbrecht, S., Pichot, V., Goepfert, T., Lin, H., & Fischer, B. M. (2022). Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy. Polymer, 257, Article 125285. https://doi.org/10.1016/j.polymer.2022.125285

Vancouver

Engelbrecht S, Pichot V, Goepfert T, Lin H, Fischer BM. Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy. Polymer. 2022 Oct 4;257:125285. Epub 2022 Sept 5. doi: 10.1016/j.polymer.2022.125285

Author

Engelbrecht, Sebastian ; Pichot, Vincent ; Goepfert, Thomas et al. / Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy. In: Polymer. 2022 ; Vol. 257.

Bibtex

@article{6b1fd1cd3ae5422fa1c4984e21bfff64,
title = "Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy",
abstract = "The dynamic behavior of polycarbonate and poly(methyl methacrylate) upon water immersion at temperatures of 40 °C and 70 °C was studied by gravimetric measurements and by terahertz time-domain spectroscopy. Time-resolved measurements of the terahertz refractive index and absorption coefficient show a good agreement to the gravimetric measurements. Assuming a Fickian diffusion mechanic the diffusion coefficients were extracted from both methods. It was found that the terahertz measurements provide a reliable non-contact way to study the water diffusion in polymers. Especially, the THz absorption coefficient seems to be a robust method to determine the diffusion coefficients.",
keywords = "Polymers, Fickian water diffusion, THz spectroscopy",
author = "Sebastian Engelbrecht and Vincent Pichot and Thomas Goepfert and Hungyen Lin and Fischer, {Bernd M.}",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Polymer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer, 257, 125285, 2022 DOI: 10.1016/j.polymer.2022.125285",
year = "2022",
month = oct,
day = "4",
doi = "10.1016/j.polymer.2022.125285",
language = "English",
volume = "257",
journal = "Polymer",
issn = "0032-3861",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Extraction of Fickian water diffusion in polymers using terahertz time-domain spectroscopy

AU - Engelbrecht, Sebastian

AU - Pichot, Vincent

AU - Goepfert, Thomas

AU - Lin, Hungyen

AU - Fischer, Bernd M.

N1 - This is the author’s version of a work that was accepted for publication in Polymer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer, 257, 125285, 2022 DOI: 10.1016/j.polymer.2022.125285

PY - 2022/10/4

Y1 - 2022/10/4

N2 - The dynamic behavior of polycarbonate and poly(methyl methacrylate) upon water immersion at temperatures of 40 °C and 70 °C was studied by gravimetric measurements and by terahertz time-domain spectroscopy. Time-resolved measurements of the terahertz refractive index and absorption coefficient show a good agreement to the gravimetric measurements. Assuming a Fickian diffusion mechanic the diffusion coefficients were extracted from both methods. It was found that the terahertz measurements provide a reliable non-contact way to study the water diffusion in polymers. Especially, the THz absorption coefficient seems to be a robust method to determine the diffusion coefficients.

AB - The dynamic behavior of polycarbonate and poly(methyl methacrylate) upon water immersion at temperatures of 40 °C and 70 °C was studied by gravimetric measurements and by terahertz time-domain spectroscopy. Time-resolved measurements of the terahertz refractive index and absorption coefficient show a good agreement to the gravimetric measurements. Assuming a Fickian diffusion mechanic the diffusion coefficients were extracted from both methods. It was found that the terahertz measurements provide a reliable non-contact way to study the water diffusion in polymers. Especially, the THz absorption coefficient seems to be a robust method to determine the diffusion coefficients.

KW - Polymers

KW - Fickian water diffusion

KW - THz spectroscopy

U2 - 10.1016/j.polymer.2022.125285

DO - 10.1016/j.polymer.2022.125285

M3 - Journal article

VL - 257

JO - Polymer

JF - Polymer

SN - 0032-3861

M1 - 125285

ER -