20.500.12556/DKUM-27722 Rheological studies of concentrated guar gum 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. textile printing printing pastes polysaccharides thickeners rheology viscoelasticity surfactants guar gum tiskanje tekstilij tiskarska gošča polisaharidi gostila reologija viskoelastičnost površinsko aktivne snovi guara true false false Angleški jezik Angleški jezik Neznano 2012-06-01 12:07:52 2012-06-01 12:07:52 2022-04-15 03:45:32 2019-07-10 12:20:57 2003 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677.027.513:677.042.2 8424214 0035-4511 URN:SI:UM:DK:3JVCI4N3 http://dx.doi.org/10.1007/s00397-003-0304-0 1 https://dk.um.si/Dokument.php?lang=slv&id=37048 Fakulteta za strojništvo 0 0 0