20.500.12556/DKUM-27439 Rheological study of interactions between non-ionic surfactants and polysaccharide thickeners used in textile printing The 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. textile printing polysaccharide thickeners rheology non-ionic surfactant polymer-surfactant interactions viscoelasticity tiskanje tekstilij polisaharidna gostila reologija viskoelastičnost true false false Angleški jezik Angleški jezik Neznano 2012-06-01 11:14:23 2012-06-01 11:14:23 2022-04-15 03:44:27 2019-07-10 12:17:05 2007 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677.027.513:532.135 10704150 0144-8617 URN:SI:UM:DK:3A5E0RXI http://dx.doi.org/10.1016/j.carbpol.2006.08.006 1 https://dk.um.si/Dokument.php?lang=slv&id=36739 Fakulteta za strojništvo 0 0 0