Publication result detail
Chemical crosslinking of lignite humic acids
CIHLÁŘ, Z.; KUČERÍK, J.
Original Title
Chemical crosslinking of lignite humic acids
English Title
Chemical crosslinking of lignite humic acids
Type
Abstract
Original Abstract
The aim of this work was the modification of South Moravian lignite humic acids in order to obtain cross-linked materials with improved water retention capacity. The modification by formaldehyde was used and affinity to water, kinetics of hydration and water retention capacity of obtained products were studied by thermal analysis. It was observed that all the modified samples of humic acids had higher retention capacity in comparison with the parental humic material which means that the supramolecular structure of humic acids was cross-linked and the hydrogel system was formed.
English abstract
The aim of this work was the modification of South Moravian lignite humic acids in order to obtain cross-linked materials with improved water retention capacity. The modification by formaldehyde was used and affinity to water, kinetics of hydration and water retention capacity of obtained products were studied by thermal analysis. It was observed that all the modified samples of humic acids had higher retention capacity in comparison with the parental humic material which means that the supramolecular structure of humic acids was cross-linked and the hydrogel system was formed.
Keywords
Humic acids, thermal analysis, water retention capacity, chemical crosslinking
Key words in English
Humic acids, thermal analysis, water retention capacity, chemical crosslinking
Authors
CIHLÁŘ, Z.; KUČERÍK, J.
RIV year
2012
Released
17.08.2011
Publisher
Česká společnost chemická
Location
Brno
ISBN
0009-2770
Periodical
CHEMICKE LISTY
Volume
105
Number
18
State
Czech Republic
Pages from
s905
Pages to
s905
Pages count
1