Rheological and structural characterization of carrageenan
As time after rennet addition increased, storage modulus, loss modulus and yield stress values increased. This resulted from an increase in … VYCROSS Volbella gel exhibited a higher elastic modulus G' than the other Allergan gels, roughly nearing the NASHA gel values. Preserved Network RHA 2 gel exhibited values that were close to its partially cohesive "competitors", except for Vycross. Rheological behavior of vaginal gels strongly depended on the type of gelling agent used, which potentially influences their spreading and retention properties when administered in the vaginal canal. Small variations in gels composition can result in substantial changes in their features, namely viscosity, yield stress and thixotropy.
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The rheological properties of 1-1.5% κ-carrageenan gels mixed with galactomannan, i.e., locust bean gum, tara gum, and guar gum, in ratios of 7: 3 and 1: 1 were investigated by measuring the temperature dependence and the courses of dynamic viscoelasticity and static viscoelasticity. In real-life applications, hydrogels can undergo large strain deformation, which may result in structural damage leading to failure. Here, we report the nonlinear rheological properties and failure behavior of alginate hydrogels, a class of polysaccharide hydrogels, synthesized via ionic and covalent crosslinking. The rheological properties of oil gels prepared by dispersing colloidal silica in n-dodecane and 1-dodecanol were examined. The differences in gel strength using these two media were accounted for by the difference in the extent of hydrogen bond formation between the silanol groups on the silica surface.
Determination of mechanical and rheological properties of a
Preserved Network RHA 2 gel exhibited values that were close to its partially cohesive "competitors", except for Vycross. Rheological behavior of vaginal gels strongly depended on the type of gelling agent used, which potentially influences their spreading and retention properties when administered in the vaginal canal. Small variations in gels composition can result in substantial changes in their features, namely viscosity, yield stress and thixotropy.
RHEOLOGICAL PROPERTIES - Avhandlingar.se
Rheological properties of a surfactant-induced gel for the lysozyme-sodium dodecyl sulfate-water system.
The rheological and microstructural properties of acid gels were investigated using dynamic low‐amplitude oscillatory rheology and confocal scanning laser microscopy (CSLM). Heating milks, at temperatures ≥80°C, increased the storage moduli (G′) and decreased the gelation time. The effect of basil seed gum (BSG) on the rheological and physicochemical properties of heat‐induced egg albumin gels. Food Hydrocolloids , 82 , 268–277. 10.1016/j.foodhyd.2018.01.013 [ CrossRef ] [ Google Scholar ]
Relation between Rheological Properties of Pectin Gels and Pectin Fine Structure Anna Ström1, Leif Lundin2, Ed Morris3 and Martin A.K. Williams4,5 1 Pharmaceutical Technology, Chemical and Biological Engineering, Chalmers University of Technology, 412 96 Göteborg, Sweden 2Food Science Australia, Private Bag 16, Werribee, Vic 3030, Australia
The impact of oat β-glucan concentration and molecular weight (MW) on gel properties was investigated. Mixed MW gels/viscous solutions at 3, 4, and 5% β-glucan with high molecular weight (HMW):low molecular weight (LMW) ratios of 0:100, 25:75, 50:50, 75:25, and 100:0 were evaluated. The 100:0 and 50:50 gels had the lowest tan δ values.
Pris bensin st1
Their viscoelastic properties were determined by applying a stress Rheological properties of physical and chemical gels are very different and mainly depend on the gel microstructure and strength. Although rheological properties are considered bulk and macroscopic properties, they are strongly affected by the gel chemical composition and microstructure, which depends on both covalent and physical bindings.
The influence of the addition of lecithin, a permeation enhancer, on the rheological and in vitro permeation properties of poloxamer 407 gels was investigated. Purpose: To evaluate rheological properties, in vitro dissolution, and in vivo ocular pharmacokinetics of loteprednol etabonate (LE) (submicron) ophthalmic gel 0.38%.Methods: The viscosity of the LE gel 0.38% formulation was measured with a controlled stress rheometer. 2020-11-01 · Therefore, this study aims to investigate the influence of pH conditions (pH 6.0 to pH 8.0) during pre-treatment on the rheological properties of fermentation induced pea protein gels with a protein content of 10%.
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examples of viscosifiers - Den Levande Historien
Författare :Mats how the structure of the gel influences its rheological properties.