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Title:Rheological studies of concentrated guar gum
Authors:Oblonšek, Marija (Author)
Šostar-Turk, Sonja (Author)
Lapasin, Romano (Author)
Files:URL http://dx.doi.org/10.1007/s00397-003-0304-0
 
Language:English
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Polymers and surfactants are essential ingredients of the printing paste. Polysaccharides are used commercially to thicken, suspend or stabilise aqueoussystems. Also they are used to produce gels and to act as flocculates, binders, lubricants, to serve as modifiers of film properties, and have a function as adjusters of rheological parameters. Surfactants, on the other hand, perform numerous functions acting as dispersants, wetting agents, emulsifiers and antifoaming agents. The rheological properties of polysaccharide thickeners (guar gums with different substitution levels and different producers) at different concentrations and temperatures and, second,the effects produced by the addition of nonionic surfactants (polyoxyethylene stearyl alcohols with different numbers of EO groups) have been studied under linear and nonlinear shear conditions. Experimental data have been correlated with the different modelsČ flow curves with the Cross, Carreau and Meter-Bird model, and mechanical spectra with the generalized Maxwell model and Friedrich-Braun model. The surface tensions of aqueous systems containing polysaccharide andžor surfactants have been determined overextended concentration ranges in order to detect the CMC conditions and toprovide a better understanding about the polysaccharide-surfactant interactions.
Keywords:textile printing, printing pastes, polysaccharides, thickeners, rheology, viscoelasticity, surfactants, guar gum
Year of publishing:2003
UDC:677.027.513:677.042.2
ISSN on article:0035-4511
COBISS_ID:8424214 New window
NUK URN:URN:SI:UM:DK:3JVCI4N3
Views:1703
Downloads:69
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Categories:Misc.
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Record is a part of a journal

Title:Rheologica acta
Shortened title:Rheol. Acta
Publisher:Springer-Verlag
ISSN:0035-4511
COBISS.SI-ID:5767943 New window

Secondary language

Language:English
Keywords:tiskanje tekstilij, tiskarska gošča, polisaharidi, gostila, reologija, viskoelastičnost, površinsko aktivne snovi, guara


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