Dynamic Triple-Mode Sorption and Outgassing in Materials

Abstract Moisture uptake and outgassing can be detrimental to a system by altering the chemical and mechanical properties of materials within the system over time. In this work, we conducted isotherm experiments to investigate dynamic moisture sorption and desorption in markedly different materials,...

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Autores principales:	Hom N. Sharma, Stephen J. Harley, Yunwei Sun, Elizabeth A. Glascoe
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/73a25637f164480a804e4e256c07aa16
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spelling	oai:doaj.org-article:73a25637f164480a804e4e256c07aa162021-12-02T16:07:45ZDynamic Triple-Mode Sorption and Outgassing in Materials10.1038/s41598-017-03091-32045-2322https://doaj.org/article/73a25637f164480a804e4e256c07aa162017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03091-3https://doaj.org/toc/2045-2322Abstract Moisture uptake and outgassing can be detrimental to a system by altering the chemical and mechanical properties of materials within the system over time. In this work, we conducted isotherm experiments to investigate dynamic moisture sorption and desorption in markedly different materials, i.e., a polymeric material, Sylgard-184 and a ceramic aluminosilicate material, Zircar RS-1200, at different temperatures (30 °C–70 °C) by varying the water activity (0.0–0.90). Sylgard-184 showed a linear sorption and outgassing behavior with no-hysteresis over the entire temperature and water activity range considered here. Whereas, the sorption and outgassing of Zircar RS-1200 was highly non-linear with significant hysteresis, especially at higher water activities, at all temperatures considered here. The type of hysteresis suggested the presence of mesopores in Zircar RS-1200, whereas the lack of hysteresis in Sylgard-184 indicates that it has a nonporous structure. A diffusion model coupled with a dynamic, triple-mode sorption (Langmuir, Henry, and pooling modes) model employed in this study matched our experimental data very well and provides mechanistic insight into the processes. Our triple-mode sorption model was adaptive enough to (1) model these distinctly different materials and (2) predict sorption and outgassing under conditions that are distinctly different from the parameterization experiments.Hom N. SharmaStephen J. HarleyYunwei SunElizabeth A. GlascoeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hom N. Sharma Stephen J. Harley Yunwei Sun Elizabeth A. Glascoe Dynamic Triple-Mode Sorption and Outgassing in Materials
description	Abstract Moisture uptake and outgassing can be detrimental to a system by altering the chemical and mechanical properties of materials within the system over time. In this work, we conducted isotherm experiments to investigate dynamic moisture sorption and desorption in markedly different materials, i.e., a polymeric material, Sylgard-184 and a ceramic aluminosilicate material, Zircar RS-1200, at different temperatures (30 °C–70 °C) by varying the water activity (0.0–0.90). Sylgard-184 showed a linear sorption and outgassing behavior with no-hysteresis over the entire temperature and water activity range considered here. Whereas, the sorption and outgassing of Zircar RS-1200 was highly non-linear with significant hysteresis, especially at higher water activities, at all temperatures considered here. The type of hysteresis suggested the presence of mesopores in Zircar RS-1200, whereas the lack of hysteresis in Sylgard-184 indicates that it has a nonporous structure. A diffusion model coupled with a dynamic, triple-mode sorption (Langmuir, Henry, and pooling modes) model employed in this study matched our experimental data very well and provides mechanistic insight into the processes. Our triple-mode sorption model was adaptive enough to (1) model these distinctly different materials and (2) predict sorption and outgassing under conditions that are distinctly different from the parameterization experiments.
format	article
author	Hom N. Sharma Stephen J. Harley Yunwei Sun Elizabeth A. Glascoe
author_facet	Hom N. Sharma Stephen J. Harley Yunwei Sun Elizabeth A. Glascoe
author_sort	Hom N. Sharma
title	Dynamic Triple-Mode Sorption and Outgassing in Materials
title_short	Dynamic Triple-Mode Sorption and Outgassing in Materials
title_full	Dynamic Triple-Mode Sorption and Outgassing in Materials
title_fullStr	Dynamic Triple-Mode Sorption and Outgassing in Materials
title_full_unstemmed	Dynamic Triple-Mode Sorption and Outgassing in Materials
title_sort	dynamic triple-mode sorption and outgassing in materials
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/73a25637f164480a804e4e256c07aa16
work_keys_str_mv	AT homnsharma dynamictriplemodesorptionandoutgassinginmaterials AT stephenjharley dynamictriplemodesorptionandoutgassinginmaterials AT yunweisun dynamictriplemodesorptionandoutgassinginmaterials AT elizabethaglascoe dynamictriplemodesorptionandoutgassinginmaterials
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Dynamic Triple-Mode Sorption and Outgassing in Materials

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