Viscosity behavior

Ebook "Polymer physics: From suspensions to nanocomposites and beyond" explores the interrelationships among polymer structure, morphology, and physical and mechanical behavior. Featuring contributions from renowned experts, the book covers the basics of important areas in polymer physics while projecting into the future, making it a valuable resource for students and chemists, chemical engineers, materials scientists, and polymer scientists as well as professionals in related industries.

776p loivantrinh 29-10-2023 4 2   Download

Polymer blending is one of the advanced technologies to attain polymeric material with tailored properties. In this work, the miscibility of Poly(methyl methacrylate) (PMMA) and Polystyrene (PS) blend in benzene was investigated by employing various techniques such as FTIR spectroscopy, viscosity measurement technique, light scattering techniques, DSC and TGA techniques over an extended range of concentrations, compositions, and temperatures.

14p lyhuyenthu 31-01-2023 6 1   Download

Starch is an important class of macromolecules for human nutrition. However, its rapid digestibility leads to a high amount of glucose released into the blood and contributes to a high risk of obesity and type II diabetes.

8p vihermione 06-01-2023 10 3   Download

This study is the continuation of our previous work (Kopaˇc, Abrami, et al., 2021) where the theoretical approach of polymer-polymer interaction to predict the crosslink density of hydrogels was introduced. This theory is further extended to the flow properties of hydrogels that allow the analysis of synergistic effect in hydrogel systems and the understanding of possible anomalous behavior of certain mixtures.

12p viginny 30-12-2022 10 3   Download

The prevalence of dysphagia is very high in institutionalized elderly. Knowledge of the rheological and sensory characteristics of the various thickeners in elderly is limited, although it has been seen that there are differences between the rheological behaviors of gum-based thickeners with different composition.

10p vinobelprisen 26-03-2022 10 4   Download

preading area through a 1.3 cm deep matrix was reduced with increased moisture content, densely packed matrixes, and higher viscosity oils. Initial contact angle (CA) measurements for all oils was typically lower on clay matrixes due to its sheet-like structure and high absorption capabilities. Individual droplet penetration took longer at lower MC in direct contradiction to bulk kinetics studies, suggesting different spreading behavior across the surface border.

11p thebadguys 15-01-2022 12 0   Download

New polymeric phthalocyanine moieties (M = 2H, Zn, Ni, Cu, and Co) were synthesized via polytetracyclomerization reaction of o-bis[3-(3,4-dicyanophenoxy)propyloxy]benzene (3), which can be obtained by the reaction of 4-nitrophthalonitrile with o-bis[(3-hydroxypropyl)oxy]benzene. Aggregation and disaggregation behavior of the polymeric phthalocyanine (5) was studied with some alkali and earth alkali metal cations. Measured intrinsic viscosities of the polymeric phthalocyanines exhibited a substantial decreasing tendency with dilution of the solution.

18p langthannam 29-12-2021 5 0   Download

Protic ionic liquids (PILs) were synthesized through a stoichiometric neutralization reaction between 2,2′ - (ethylenedioxy)-bis(ethylamine) { Edbea} and various acids (formic, acetic, boric, decanoic, and gentisic acid). The PILs were characterized by elemental analyses, FTIR, 1 H and 13 C NMR spectroscopy, and thermogravimetric analysis. All the PILs except PIL3 were liquid at room temperature. The viscosity of the PILs (PIL1, 2, 4, 5) was measured using a cone-and-plate viscometer at ambient temperature.

21p tudichquannguyet 29-11-2021 7 0   Download

In this study, phase separation of colloidal whey protein isolate (WPI) particle dispersions was studied using a rod-like polysaccharide xanthan. Effects of different xanthan concentration, particle volume fraction, and temperature were analyzed by visual observations, turbidity measurements, and particle mobility tracking method. Particle mobility was determined using a diffusing wave spectroscopy (DWS) set up. Xanthan concentration was kept low in order not to increase the viscosity of dispersions, so that the phase separation could be observed easily.

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The electrolytes of 1 M NaFSI dissolved in various carbonate solvents containing EC, PC and/or DMC have been investigated to find out the most compatible electrolyte composition with hard carbon (HC) anode in Na-ion batteries (NIBs). The physical properties including viscosity and conductivity were measured to correlate with the electrochemical behaviors of these electrolytes. The Na/HC half-cell was used for testing the charge/discharge performance of prepared electrolytes at room temperature.

5p cothumenhmong11 06-05-2021 13 1   Download

The comparison with experimental data shows that the GSC provides very good result for a well arranged particle size scale that allows mapping the whole medium by composite spheres of different size scales. However, the GSC cannot be used for a suspension with a non negligible volume of the EFZ. For such a case, extensions of the GSC those take into account the contribution of the EFZ to the overall viscous behavior of the system is necessary to fit with experimental data.

14p nguaconbaynhay11 07-04-2021 11 2   Download

Rheological characteristics of honey-whole grain cereal extrudates as influenced by varying extrusion processing conditions were studied. Honey, blended at various level with the cereal flours at 14 and 17% feed moisture, was subjected to extrusion processing at different extrusion temperatures. The rheological properties of the resultant extrudates were measured by rapid visco analyzer. It was observed that all the processing conditions significantly affected the rheological properties of the extrudates. Increased extrusion temperature resulted in decreased viscosity of the extrudates.

9p chauchaungayxua6 26-06-2020 7 0   Download

Research targets of the thesis: (i) To thereticallystudy the overall characteristics of MIH and their impacts based on theoretical calculation (ii) To carry out experiments on the influence of alternating magnetic field, particle size and viscosity on specific loss power for CoFe2O4 and MnFe2O4, chosen as representative of respectively high K and low K magnetic nanoparticles; and to compare the experimental behavior with that obtained by theroretical calculations.

23p xacxuoc4321 08-07-2019 52 2   Download

Duan et al. Nanoscale Research Letters 2011, 6:248 http://www.nanoscalereslett.com/content/6/1/248 NANO EXPRESS Open Access Viscosity affected by nanoparticle aggregation in Al2O3-water nanofluids Fei Duan*, Dingtian Kwek, Alexandru Crivoi Abstract An investigation on viscosity was conducted 2 weeks after the Al2O3-water nanofluids having dispersants were prepared at the volume concentration of 1-5%. The shear stress was observed with a non-Newtonian behavior. On further ultrasonic agitation treatment, the nanofluids resumed as a Newtonian fluids.

5p dauphong13 09-02-2012 39 6   Download