Untypical rheological behaviour of the lignite-carboxymethylcellulose-water dispersion system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F07%3APU69563" target="_blank" >RIV/00216305:26310/07:PU69563 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Untypical rheological behaviour of the lignite-carboxymethylcellulose-water dispersion system
Original language description
CSuspensions of lignite in a solution of a high molecular weight carboxymethylcellulose show peculiar rheological behaviour. Unless the lignite concentration is sufficiently high apparent viscosity and viscoelastic moduli of the suspension are lower thanthose of the pure solution. This effect is not suppressed by changing pH and seems to be common for low concentrated suspensions in solutions of high molecular weight (bio)polymer. It is explained by specific structuring of suspensions. Lignite particles at lower concentration separate long cellulose chains and facilitate their movement under shear flow. The particles loosen inter-chain contacts, disturb and release elastic gel-like structure formed by the long cellulose chains, which results, in the low strain oscillatory deformation, in decrease of the moduli and in increase of the loss angle. If the amount of lignite particles is sufficiently high suspension stiffening occurs as usual. No such effect was observed for suspensions pre
Czech name
Netypické reologické chování disperzního systému lignit-karboxymethylcelulóza-voda
Czech description
Modifikace tokových vlastnsotí lignitických past pomocí derivátů celulózy.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA105%2F05%2F0404" target="_blank" >GA105/05/0404: Progressive and efficient non-energetical applications of lignite</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Colloid and Polymer Science
ISSN
0303-402X
e-ISSN
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Volume of the periodical
285
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
865-872
UT code for WoS article
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EID of the result in the Scopus database
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