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CIHLÁŘ, Z.; VOJTOVÁ, L.; CONTE, P.; NASIR, S.; KUČERÍK, J.
Original Title
Hydration and water holding properties of cross-linked lignite humic acids
English Title
Type
WoS Article
Original Abstract
In order to stabilize the structure of lignite humic acids and improve the water holding capacity, we applied formaldehyde cross-linking procedure. By combining the 1H NMR relaxometry and methods of thermal analysis, the kinetics and degree of hydration, water distribution and moisture uptake were investigated. Formaldehyde cross-linking of humic acids influenced mainly their physical properties. The thermo-oxidative stability was decreased due to an increase in pore sizes. Spatial polar groups separation increased moisture uptake at higher relative humidity.
English abstract
Keywords
lignite humic acids, cross-linking, hydration, DSC, NMR relaxometry, water molecule bridges
Key words in English
Authors
RIV year
2015
Released
01.10.2014
Publisher
Elsevier
ISBN
0016-7061
Periodical
Geoderma
Volume
230-231
Number
1
State
Kingdom of the Netherlands
Pages from
151
Pages to
160
Pages count
10
URL
https://www.sciencedirect.com/science/article/pii/S001670611400175X
BibTex
@article{BUT107447, author="Zdeněk {Cihlář} and Lucy {Vojtová} and Pelegrino {Conte} and Saqib {Nasir} and Jiří {Kučerík}", title="Hydration and water holding properties of cross-linked lignite humic acids", journal="Geoderma", year="2014", volume="230-231", number="1", pages="151--160", doi="10.1016/j.geoderma.2014.04.018", issn="0016-7061", url="https://www.sciencedirect.com/science/article/pii/S001670611400175X" }
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