scholarly journals Comparative analysis of the properties of cookies containing oleogel based on beeswax and its fractions

2021 ◽  
Vol 941 (1) ◽  
pp. 012033
Author(s):  
Yu V Frolova ◽  
R V Sobolev ◽  
A A Kochetkova
Keyword(s):  
Comparative Analysis ◽  
Rheological Properties ◽  
Rheological Characteristics ◽  
Solid Fat

Abstract The article presents a comparative analysis of the properties of dough and cookies based on oleogels structured with various substances. Oleogels based on beeswax and its fractions were used as an alternative to solid fat in cookies. We found out that the use of separate beeswax fractions in oleogels makes it possible to obtain dough with different rheological characteristics. It was revealed that there is no regularity in the change in the rheological properties of cookies from the properties of the dough and oleogels. Analysis of the organoleptic profile of the cookie samples showed high values. This fact indicates the acceptability of using oleogels based on individual wax fractions in the biscuits cookies. The results obtained indicate the potential of using oleogels based on beeswax fractions in cookies as an alternative to solid fats.

Study of the microstructure of low-molecular rubbers

2021 ◽  
Vol 87 (11) ◽  
pp. 26-32
Author(s):  
A. A. Pushkareva ◽  
O. A. Vozisova ◽  
M. A. Leuhina ◽  
L. L. Khimenko ◽  
A. N. Ilyin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Comparative Analysis ◽  
Low Temperature ◽  
Ir Spectroscopy ◽  
Rheological Properties ◽  
Polymer Chain ◽  
Epoxy Oligomer ◽  
Hydroxyl Groups ◽  
Structural Units

The oligomer microstructure, reflecting the configuration of the elementary units (cis-1,4-, trans-1,4-, and 1,2-) and their distribution order in the polymer chain, decisively affects the physicochemical and rheological properties of the oligomer. Parameters of microstructure-dependent transitions (glass transition) characterize the oligomer behavior under abnormal low-temperature conditions. We present the results of studying the microstructure of low-molecular rubbers. We determined the content of cis-1,4- and trans-1,4-structural links of poly-divinyl-isoprene-urethane-epoxy oligomer. The structure of polybutadiene HTPB-IV with terminal hydroxyl groups was analyzed using NMR and IR spectroscopy. A comparative analysis of the microstructure of the poly-divinyl-isoprene-urethane-epoxy oligomer and low molecular rubbers with a known content of structural units has been carried out. The obtained results can be used to obtain oligomers with the desired physicochemical and mechanical properties.

The effect of the presence of seeds on the nutraceutical, sensory and rheological properties of Physalis spp. Fruits jam: A comparative analysis

2020 ◽  
Vol 302 ◽  
pp. 125141 ◽  
Author(s):  
Aleyda Pérez-Herrera ◽  
Gabino A. Martínez-Gutiérrez ◽  
Frank M. León-Martínez ◽  
Marco A. Sánchez-Medina
Keyword(s):  
Comparative Analysis ◽  
Rheological Properties

Study of Rheological Properties of Cariphalte Modified Asphalt

2014 ◽  
Vol 638-640 ◽  
pp. 1185-1189
Author(s):  
Tan Hua
Keyword(s):  
Comparative Analysis ◽  
Rheological Properties ◽  
Fatigue Damage ◽  
Systematic Study ◽  
Low Temperatures ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Fatigue Properties ◽  
Dynamic Shear ◽  
Modified Asphalt

To explore the effects of different factors on the rheological properties of cariphalte modified asphalt, based superpave asphalt binder relevant norms, through the use of dynamic shear rheometer Shell 70# asphalt under different temperature, frequency and strain conditions and rheological properties of cariphalte modified asphalt carrying on a systematic study, and comparative analysis of the two anti-fatigue properties of asphalt in the middle and low temperature.The results show that: compared with 70# asphalt, cariphalte modified asphalt has better rutting resistance over a wide temperature range; at lower frequencies and high intensity pavement, cariphalte modified asphalt to better resistance to permanent deformation; better fatigue resistance at low temperatures, and more fatigue damage is not easy to achieve.

Theoretical and Empiriical Modeling of the Rheology of Fresh Cement Pastes

1992 ◽  
Vol 289 ◽  
Author(s):  
Gebran N. Karam
Keyword(s):  
Experimental Investigation ◽  
Rheological Properties ◽  
Empirical Model ◽  
General Framework ◽  
Theoretical Modeling ◽  
Empirical Modeling ◽  
Rheological Characteristics ◽  
Concentrated Suspensions ◽  
Cement Pastes ◽  
Semi Empirical

AbstractThe most important property of cements and concretes after strength is the workability, which is controlled by the rheological characteristics of the mix. Theoretical modeling having proved complicated and in some cases mathematically untractable, cement specialists have concentrated on empirical based models for the last two decades. The major theoretical contributions to date on the properties of colloidal and concentrated suspensions are summarized and a general framework for theoretical modeling of cement viscosity is established. The empirical modeling and the experimental investigation of the rheological properties of fresh cements are reviewed and discussed. A semi-empirical model is proposed and its validity tested in the interpretation of some published experimental results.

ANALYSIS OF THE POTENTIAL USAGE OF SELECTED MAGNETIC FLUIDS IN THRUST SLIDE BEARINGS

Tribologia ◽  
2016 ◽  
Vol 269 (5) ◽  
pp. 41-49 ◽  
Author(s):  
Wojciech HORAK ◽  
Józef SALWIŃSKI ◽  
Marcin SZCZĘCH
Keyword(s):  
Magnetic Field ◽  
Rheological Properties ◽  
Mechanical Energy ◽  
Magnetic Fluids ◽  
Magnetorheological Fluids ◽  
Machine Design ◽  
Rheological Characteristics ◽  
New Horizons ◽  
Controlled Systems ◽  
Ferromagnetic Fluids

Magnetic fluids are substances whose rheological properties can be actively influenced by treatment with a magnetic field. Two main types of magnetic fluids can be distinguished: ferromagnetic fluids, and magnetorheological fluids. Ferrofluids are mostly used in sealing engineering, whereas magnetorheological fluids are usually applied in controlled systems for the dissipation of mechanical energy, like brakes and dampers. The ability to control the rheological properties of magnetic fluids opens new horizons for development in machine design, among others in the areas of bearing engineering. The paper presents a comparative analysis of the rheological characteristics of selected magnetic fluids with a focus on the possible areas of the application of these substances in bearing engineering.

scholarly journals Rheological properties of sugarfree milk chocolate: Comparative study and optimisation

2017 ◽  
Vol 35 (No. 5) ◽  
pp. 440-448 ◽  
Author(s):  
Rasouli-Pirouzian Haniyeh ◽  
Peighardoust Seyed Hadi ◽  
Azadmard-Damirchi Sodeif
Keyword(s):  
Rheological Properties ◽  
Good Alternative ◽  
Casson Fluid ◽  
Bulking Agents ◽  
Rheological Characteristics ◽  
Flow Properties ◽  
Milk Chocolate ◽  
Simplex Lattice ◽  
Simplex Lattice Mixture Design ◽  
Different Levels

The effects of sugar substitutes on rheological characteristics of compound milk chocolate using a simplex-lattice mixture design were evaluated. For this purpose, two bulking agents (maltitol and xylitol) at different levels (0–100%) were used and ten formulations were examined in order to find the optimum levels. All chocolate samples showed shear thinning behaviour. It was found that compound milk chocolate behaved as a Casson fluid. Chocolate formulations containing the highest maltitol substitution resulted in similar flow properties compared to those of the control and hence can be a good alternative. The results demonstrated that chocolate combinations containing 87.8% maltitol and 12.2% xylitol were found as the optimum concentrations producing the most acceptable rheological properties.

Rheological Characteristics of Solvent-Cast Poly(e-Caprolactone)/Organoclay Nanocomposite

2007 ◽  
Vol 121-123 ◽  
pp. 1455-1458
Author(s):  
Cheng Hai Hong ◽  
C.H. Lee ◽  
J.S. Choi ◽  
S.M. Hong ◽  
Hyoung Jin Choi
Keyword(s):  
Mechanical Properties ◽  
Rheological Properties ◽  
Physical And Mechanical Properties ◽  
Rheological Characteristics ◽  
Solution Intercalation ◽  
Rotational Rheometer ◽  
Internal Structures ◽  
Solvent Cast

As an effective way to enhance various properties of polymer, polymer/clay nanocompoiste is being adopted since it can hybrid the properties of the two components, showing superior physical and mechanical properties. In this study, poly(ε-caprolactone) (PCL) nanocomposites using an organoclay were prepared by a solution intercalation method, and their unique internal structures and rheological properties induced by the presence of organoclay at nano level were studied using WAXD and a rotational rheometer.

scholarly journals Relationship between Structure and Rheology of Hydrogels for Various Applications

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 255
Author(s):  
Gorjan Stojkov ◽  
Zafarjon Niyazov ◽  
Francesco Picchioni ◽  
Ranjita K. Bose
Keyword(s):  
Rheological Properties ◽  
Rheological Behavior ◽  
Chemical Structure ◽  
Industrial Applications ◽  
Rheological Characteristics ◽  
Frequency Sweep ◽  
The Relationship

Hydrogels have gained a lot of attention with their widespread use in different industrial applications. The versatility in the synthesis and the nature of the precursor reactants allow for a varying range of hydrogels with different mechanical and rheological properties. Understanding of the rheological behavior and the relationship between the chemical structure and the resulting properties is crucial, and is the focus of this review. Specifically, we include detailed discussion on the correlation between the rheological characteristics of hydrogels and their possible applications. Different rheological tests such as time, temperature and frequency sweep, among others, are described and the results of those tests are reported. The most prevalent applications of hydrogels are also discussed.

scholarly journals Determining the rheological properties of viscoelastic materials by the values of creep strain

2019 ◽  
Vol 18 (3) ◽  
pp. 166-172
Author(s):  
E. Yu. Ivanov ◽  
V. A. Kirpichev
Keyword(s):  
Rheological Properties ◽  
Creep Strain ◽  
Viscoelastic Properties ◽  
Test Bench ◽  
Nonlinear Dependence ◽  
Rheological Characteristics ◽  
Viscoelastic Materials ◽  
Creep Curves ◽  
The Moment

Determination of creep strain arising due to stresses acting up to the moment of time t is considered. The phenomenon of constant-stress creep is described. A method is proposed to determine the parameters of the Arutyunyan creep kernel selected to describe the behavior of a material using two creep curves of a material with viscoelastic properties and nonlinear dependence of creep strain on the stress. In addition, the constant in the expression describing nonlinear dependence of creep strain on the stress is defined. The AMg6M alloy, widely used in the design of aerospace products, was chosen as the material to be analyzed. The tests were carried out on samples 3 mm thick at strains of 65 MPa and 156.9 MPa. According to the results of testing samples of materials on the test bench of Samara University creep curves were obtained. By determining the parameters of the approximation of the Arutyunyan kernel and the parameter included in the expression of nonlinear dependence of creep strain on the stress, it is possible to determine the value of the creep strain of the material for arbitrary values of stress and time. Comparison of the experimental and calculated creep curves for the AMg6M alloy confirms the validity of determination of the rheological characteristics of the tested material.

Sign in / Sign up

Export Citation Format

Share Document