Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution
Fundamental understanding of cashmere–water interaction is a critical part both for the manufacturing of cashmere processing and the development of cashmere-based heat-moisture management textiles. Based on the unfreezable threshold and hygroscopic properties, different types of water in cashmere an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-09-01
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| Series: | Polymer Testing |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941821002348 |
| _version_ | 1818739949648740352 |
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| author | Liuxiang Zhan Yuling Li Feng Ji Ni Wang |
| author_facet | Liuxiang Zhan Yuling Li Feng Ji Ni Wang |
| author_sort | Liuxiang Zhan |
| collection | DOAJ |
| description | Fundamental understanding of cashmere–water interaction is a critical part both for the manufacturing of cashmere processing and the development of cashmere-based heat-moisture management textiles. Based on the unfreezable threshold and hygroscopic properties, different types of water in cashmere and the interaction between water and fibers were investigated by using low-temperature differential scanning calorimetry (DSC) and dynamic water vapor sorption (DVS), the pore size distribution in cashmere were also determined according to the Gibbs−Thomson effect of the bound water probe. The amount of free water and non-freezable water was experimentally detected, and the critical moisture regain of these two types of water was 37.2%. The pore size distribution of cashmere showed that most pores were less than 60 nm in diameter. The monolayer moisture content of cashmere accounted for up to 17.26% (corresponding to 50 °C) of the non-freezable water, which were evaluated though the Brunner–Emmet–Teller (BET) theory. The net isometric heat of desorption is calculated from the partially overlapping isotherms at different temperatures, which break through the limitation of the Clausius–Clapeyron equation, and the boundary of monolayer water and multilayer water were identified by the curve of isosteric heat. |
| first_indexed | 2024-12-18T01:32:58Z |
| format | Article |
| id | doaj.art-c85f5a5c27194b22a21d3a57835a6db8 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-18T01:32:58Z |
| publishDate | 2021-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-c85f5a5c27194b22a21d3a57835a6db82022-12-21T21:25:33ZengElsevierPolymer Testing0142-94182021-09-01101107285Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distributionLiuxiang Zhan0Yuling Li1Feng Ji2Ni Wang3Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, ChinaKey Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, ChinaKey Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, ChinaCorresponding author. Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, PR China.; Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, ChinaFundamental understanding of cashmere–water interaction is a critical part both for the manufacturing of cashmere processing and the development of cashmere-based heat-moisture management textiles. Based on the unfreezable threshold and hygroscopic properties, different types of water in cashmere and the interaction between water and fibers were investigated by using low-temperature differential scanning calorimetry (DSC) and dynamic water vapor sorption (DVS), the pore size distribution in cashmere were also determined according to the Gibbs−Thomson effect of the bound water probe. The amount of free water and non-freezable water was experimentally detected, and the critical moisture regain of these two types of water was 37.2%. The pore size distribution of cashmere showed that most pores were less than 60 nm in diameter. The monolayer moisture content of cashmere accounted for up to 17.26% (corresponding to 50 °C) of the non-freezable water, which were evaluated though the Brunner–Emmet–Teller (BET) theory. The net isometric heat of desorption is calculated from the partially overlapping isotherms at different temperatures, which break through the limitation of the Clausius–Clapeyron equation, and the boundary of monolayer water and multilayer water were identified by the curve of isosteric heat.http://www.sciencedirect.com/science/article/pii/S0142941821002348Cashmere fibersWater formsGibbs−Thomson effectSorption isothermsIsosteric heats |
| spellingShingle | Liuxiang Zhan Yuling Li Feng Ji Ni Wang Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution Polymer Testing Cashmere fibers Water forms Gibbs−Thomson effect Sorption isotherms Isosteric heats |
| title | Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| title_full | Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| title_fullStr | Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| title_full_unstemmed | Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| title_short | Analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| title_sort | analysis of states of water in cashmere fibers and utilizing water as molecular probe for pore size distribution |
| topic | Cashmere fibers Water forms Gibbs−Thomson effect Sorption isotherms Isosteric heats |
| url | http://www.sciencedirect.com/science/article/pii/S0142941821002348 |
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