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Journal of Materials Science

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30.03.2021 | Composites & nanocomposites

Water vapor sorption mechanism of furfurylated wood

verfasst von: Xiaoshuang Shen, Dengkang Guo, Pan Jiang, Sheng Yang, Gaiyun Li, Fuxiang Chu

Erschienen in: Journal of Materials Science | Ausgabe 19/2021

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Abstract

Furfurylation could have a significant influence on wood hygroscopicity. However, moisture sorption and its mechanism of furfurylated wood are not fully understood. The aim of this study was to clarify the effect of furfurylation on sorption behavior and the mechanism of moisture sorption for furfurylated wood. Water vapor sorption isotherms were derived from dynamic vapor sorption apparatus and analyzed employing Hailwood–Horrobin model. Simultaneously, fiber saturation point and accessible hydroxyl groups were determined by NMR cryoporometry and deuterium exchange method, respectively. Results indicated that compared with control sample, furfurylated samples with different weight gain percents (WPGs) exhibited a little difference in reduced equilibrium moisture content (EMC_R) throughout RH range. Specifically, an increase below 30% RH and above 60% RH, and a reduction at 30–60% RH in EMC_R of the furfurylated samples were showed, when compared with that of control sample. EMC_R of 69% WPG displayed no distinguishable difference with that of 23% WPG over the whole RH range. Fiber saturation point increased with enhanced WPGs_. However, accessible OH groups possessed a reduction with increased WPGs. The hygroscopic mechanism of furfurylated wood was associated with not only accessible OH groups but also other effects. This work could provide valuable guidance to control moisture-related properties of furfurylated wood.

Vorheriger Artikel Chemical surface densification of hardwood through lateral monomer impregnation and in situ electron beam polymerization, Part I: density profile and surface hardness of three hardwood species

Nächster Artikel An efficient, stable and reusable polymer/TiO2 photocatalytic membrane for aqueous pollution treatment

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Titel: Water vapor sorption mechanism of furfurylated wood
verfasst von: Xiaoshuang Shen
Dengkang Guo
Pan Jiang
Sheng Yang
Gaiyun Li
Fuxiang Chu
Publikationsdatum: 30.03.2021
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 19/2021
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-021-06041-7

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