For rheological analyses, viscoelastic data were collected with plate-plate geometry of 25mm, temperature regulated by a Peltier-effect plate, and the following assessed: Strain sweep from 0.01% to 3000% strain at 1Hz over frequency sweep from 0.1 to 100 Hz. Results: NASHA Restylane gels with and without lidocaine exhibited similar viscoelastic characteristics, with very similar tan δ values, but the elastic modulus G' proved significantly higher when the gel was injected with lidocaine vs

1999-12-20

As is well known, the isoelectric point although the rheological properties of gelatin is determined by the pH value at which the (Ward and Saunders (16), Veis (15), Watase and velocity of electrophoresis becomes zero and Arakawa (17) and agar-agar or agarose (Watase the viscosity becomes minimum. A systematic study of the rheological properties of gels formed by polyelectrolyte complexes comprising cold-water fish gelatin and SA in a wide range of mass ratios was conducted. The results indicated that the sol-gel transition is a kinetic process, although gel formation occurs relatively rapidly at low temperatures. I would like to measure the rheological properties of a gel using a rotational rheometer with a plate-plate geometry.The sample is a cylinder with diameter D and thickness h. Normally I make two 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.

Multicomponent gels obtained with the two gel-forming agents demonstrate synergism of the rheological characteristics. Abstract. 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.

av M Rahman · 2013 · Citerat av 1 — investigate the feasibility of determining the rheological properties of cement is responsible for the solidification of gels, which may again be liquefied to sols.

Author: Helena Barreto Henriksson; M. Llorente; to offer the same premium composition and rheological properties as RHA 2, but makes the filler suitable for reshaping the lips using a small amount of gel. Rheological and structural characterization of carrageenan emulsion gels.

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.

1988-06-01 It is shown that upon exceeding the certain shear rate value gels demonstrate abnormal rheological property (instant flow cessation). Dependence of shear stress and dynamic viscosity of Gel 1 on In particular, the gelling properties of zein promote the formation of a porous network, which can be easily used for the controlled leakage of the entrapped bioactive compounds. Several studies have described the rheological behavior of speciﬁc fractions of zein such as - and -zein dispersions, A series of low density, highly porous clay/poly(vinyl alcohol) composite aerogels, incorporating ammonium alginate, were fabricated via a convenient and eco-friendly freeze drying method. It is significant to understand rheological properties of precursor gels because they directly affect the form of aerogels and their processing behaviors. Rheological properties of heat‐induced gels from egg albumen and bovine plasma proteins were measured using a mechanical loading device.

The rheological properties of the gels were determined by oscillatory viscometry at a stress range of 0 - 100 Pa and a frequency of 0.05 Hz using a 1 mm gap. 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.
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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. The 50:50 gels had the highest storage moduli (G Stress relaxation measurements were made on agarose-gelatin aqueous gels. The results were analysed in terms of a six-element model composed of three Maxwell elements in parallel. The temperature and concentration dependences were examined.E 1, the elastic modulus of the Maxwell element with the longest relaxation time, reflects the elasticity of the main network structure.

1999-12-20 · Thermoreversible gels may be used in delivery systems which require a sol-gel transition at body temperature. 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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The rheological properties of several commercial topical fluoride gels were studied. For that purpose, we investigated hysteresis loops under standard conditions, equilibrium values, apparent viscosities as a function of shear rate, rate of thixotropic recovery, and the influence of temperature.

rheological properties of a cell-loaded ström dating sweden gel during ECM Factors affecting the rheological properties of gels made from hoki (macruronus novaezelandiae) : a thesis presented in partial fulfillment of the requirements for Fundamentals of suspension rheology and particle gels. Constitutive (e) how rheological properties affect the coating process and properties of coated paper L. Bergström, "Rheological Properties of Al2O3 and SiC-Whisker Yanez, E. Laarz and L. Bergström, "Viscoelastic properties of particle gels", Session: Sourcing and modification, Processes and rheology, Properties of materials, Devices Sensor Based on Mixed Ionic–Electronic Cellulose Aerogels, de gel aux fluides de forage à base d'eau douce.