Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor

The dynamics of n-propanol confined in regular MCM-41 matrix with the pore size D(pore) = 40 Å, under various matrix conditioning and sample confining conditions, using broadband dielectric spectroscopy (BDS), is reported. First, various drying procedures with the capacitor filling under air or N(2)...

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Autores principales: Bartoš, Josef, Arrese-Igor, Silvia, Švajdlenková, Helena, Kleinová, Angela, Alegría, Angel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182830/
https://www.ncbi.nlm.nih.gov/pubmed/32156023
http://dx.doi.org/10.3390/polym12030610
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author Bartoš, Josef
Arrese-Igor, Silvia
Švajdlenková, Helena
Kleinová, Angela
Alegría, Angel
author_facet Bartoš, Josef
Arrese-Igor, Silvia
Švajdlenková, Helena
Kleinová, Angela
Alegría, Angel
author_sort Bartoš, Josef
collection PubMed
description The dynamics of n-propanol confined in regular MCM-41 matrix with the pore size D(pore) = 40 Å, under various matrix conditioning and sample confining conditions, using broadband dielectric spectroscopy (BDS), is reported. First, various drying procedures with the capacitor filling under air or N(2) influence the BDS spectra of the empty MCM-41 and the confined n-PrOH/MCM-41 systems, but have a little effect on the maximum relaxation time of the main process. Finally, various filling factors of n-PrOH medium in the optimally treated MCM-41 system lead to unimodal or bimodal spectra interpreted in terms of the two distinct dynamic phases in the confined states.
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spelling pubmed-71828302020-05-01 Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor Bartoš, Josef Arrese-Igor, Silvia Švajdlenková, Helena Kleinová, Angela Alegría, Angel Polymers (Basel) Article The dynamics of n-propanol confined in regular MCM-41 matrix with the pore size D(pore) = 40 Å, under various matrix conditioning and sample confining conditions, using broadband dielectric spectroscopy (BDS), is reported. First, various drying procedures with the capacitor filling under air or N(2) influence the BDS spectra of the empty MCM-41 and the confined n-PrOH/MCM-41 systems, but have a little effect on the maximum relaxation time of the main process. Finally, various filling factors of n-PrOH medium in the optimally treated MCM-41 system lead to unimodal or bimodal spectra interpreted in terms of the two distinct dynamic phases in the confined states. MDPI 2020-03-07 /pmc/articles/PMC7182830/ /pubmed/32156023 http://dx.doi.org/10.3390/polym12030610 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bartoš, Josef
Arrese-Igor, Silvia
Švajdlenková, Helena
Kleinová, Angela
Alegría, Angel
Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title_full Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title_fullStr Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title_full_unstemmed Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title_short Dynamics of Confined Short-Chain alkanol in MCM-41 by Dielectric Spectroscopy: Effects of matrix and system Treatments and Filling Factor
title_sort dynamics of confined short-chain alkanol in mcm-41 by dielectric spectroscopy: effects of matrix and system treatments and filling factor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182830/
https://www.ncbi.nlm.nih.gov/pubmed/32156023
http://dx.doi.org/10.3390/polym12030610
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