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Rheological study of interactions between non-ionic surfactants and polysaccharide thickeners used in textile printingFijan, Rebeka ; Šostar-Turk, Sonja ; Lapasin, RomanoThe influence of four non-ionic surfactants (isododecyl and cetyl polyoxyethylene ethers) on aqueous polysaccharide solutions (sodium alginate, guar gum, and sodium carboxymethyl guar), applicable ... for textile printing pastes, were studied via rheological measurements. Rheology of polysaccharide-surfactant solutions in aqueous matrices is primarily governed by polymer content, which imparts marked shear-thinning and viscoelastic character to the system. Such properties are modulated in moderate but sensible way by changes in surfactant concentration or type. Above 3% surfactants addition to non-substituted guar gum solutions results in a significant impact leading to phase separation and a particular strongly associated phase is formed due to hydrogen bonds between ethylene oxy units from the surfactant and primary hydroxyl groups in guar. A satisfactory fitting of viscosity data is obtained with both the Cross equation and the Roberts-Barnes-Carew model. The experimental results of mechanical spectra can be described quite satisfactory with both the Friedrich-Braun and the generalized Maxwell models.Source: Carbohydrate polymers. - ISSN 0144-8617 (Vol. 68, iss. 4, Apr. 2007, str. 708-717)Type of material - article, component partPublish date - 2007Language - englishCOBISS.SI-ID - 10704150
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Fijan, Rebeka | 24909 |
Šostar-Turk, Sonja | 06095 |
Lapasin, Romano | ![]() |
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