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Journal articles on the topic 'Viscosimetric properties'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Schmidt, R., G. Klingenberg, and M. Woydt. "Thermophysical and viscosimetric properties of environmentally acceptable lubricants." Industrial Lubrication and Tribology 58, no. 4 (2006): 210–24. http://dx.doi.org/10.1108/00368790610670809.

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2

Tande, Brian M., Norman J. Wagner, Michael E. Mackay, Craig J. Hawker, and Miyoun Jeong. "Viscosimetric, Hydrodynamic, and Conformational Properties of Dendrimers and Dendrons." Macromolecules 34, no. 24 (2001): 8580–85. http://dx.doi.org/10.1021/ma011265g.

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3

Strelets, L. A., L. V. Gorbunova, and A. V. Bogoslovsky. "The Effect of a Hydrocarbon Fragment in a Molecule on Depressant Activity of Resins." Eurasian Chemico-Technological Journal 3, no. 2 (2017): 113. http://dx.doi.org/10.18321/ectj553.

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The effect of resins on solidification of paraffin solutions has been studied by vibration viscosimetry. This technique was used for studies of coagulating liquids, since the sample structure is less affected by mechanical oscillations compared to traditional rotary and linear shears. The installation developed for studies of thermo-induced phase transitions and the measurement procedure are described. The viscosimetric technique allows continuous registration of rheological properties with changing temperature, and has proved to be quite sensitive to small amounts of resins in model paraffin

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4

Zec, Nebojša, Marija Bešter-Rogač, Milan Vraneš та Slobodan Gadžurić. "Volumetric and viscosimetric properties of [bmim][DCA] + γ-butyrolactone binary mixtures". Journal of Chemical Thermodynamics 97 (червень 2016): 307–14. http://dx.doi.org/10.1016/j.jct.2016.02.014.

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Cuomo, Francesca, Antonio de Nigris, Lucio Zeppa, Francesco Lopez, and Luigi Ambrosone. "Viscosimetric properties of sodium hyaluronate and hypromellose solutions for medical devices." Journal of Molecular Liquids 398 (March 2024): 124182. http://dx.doi.org/10.1016/j.molliq.2024.124182.

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Vraneš, Milan, Teona Teodora Borović, Patrik Drid, Tatjana Trivić, Renato Tomaš, and Nenad Janković. "Influence of Sodium Salicylate on Self-Aggregation and Caffeine Solubility in Water—A New Hypothesis from Experimental and Computational Data." Pharmaceutics 14, no. 11 (2022): 2304. http://dx.doi.org/10.3390/pharmaceutics14112304.

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The present study analyzed experimental data from volumetric and viscosimetric measurements and computational simulations to understand caffeine hydration and aggregation properties in 0.1 mol∙kg−1 of sodium salicylate aqueous solution. Sodium salicylate reduces the bitter taste and increases the solubility of caffeine in water, which is the main reason for their combination in food products. The results noted in volumetric and viscosimetric measurements indicate that sodium salicylate promotes the self-aggregation of caffeine in water. After self-aggregation, the hydration number of caffeine

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Cocchi, Marina, Matteo Manfredini, Daniela Manzini, et al. "Viscosimetric properties and internal structure of N,N-dimethylformamide + 1,2-dimethoxyethane binary mixtures." Journal of Molecular Liquids 102, no. 1-3 (2003): 309–45. http://dx.doi.org/10.1016/s0167-7322(02)00071-5.

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8

Cocca, M., L. D'Arienzo, and L. D'Orazio. "Effects of Different Artificial Agings on Structure and Properties of Whatman Paper Samples." ISRN Materials Science 2011 (July 13, 2011): 1–7. http://dx.doi.org/10.5402/2011/863083.

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With the aim at controlling cellulose degradation phenomena, the natural aging of Whatman paper samples was simulated through different artificial aging processes: thermal oxidation in air at constant temperature, photo-oxidation under Xenon arc lamp, accelerating ageing in climatic chamber, and chemical oxidation with sodium methaperiodate. The cellulose degradation was studied by means of viscosimetric, Fourier transform infrared spectroscopy (FTIR), and wide angle X-ray scattering (WAXS) techniques together with thermogravimetric (TGA), mechanical, and optical analyses. All the treatments c

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9

Zeynalova, G. A. "Diagnosis of the rheological properties of oil emulsions considering watercut and temperature factors." Azerbaijan Oil Industry, no. 6 (June 15, 2020): 48–50. http://dx.doi.org/10.37474/0365-8554/2020-6-7-48-50.

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It is well known that one of the factors adversely affecting the operational efficiency of infield technological oil pipelines is persistent oil emulsions formed due to the oils watercut. These hardly demulsifible emulsions with abnormal rheological features show non-Newtonian properties. Depending on the temperature and watercut degree, the viscosity of these emulsions varies widely. The specification of viscosity and other physical-chemical properties in oil-field experience is carried out via laboratory testing of oil samples according to the standards. Based on the roto-viscosimetric studi

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10

Burenin, A. A., L. V. Kovtanyuk, and A. S. Ustinova. "Accounting for the elastic properties of a non-Newtonian material under its viscosimetric flow." Journal of Applied Mechanics and Technical Physics 49, no. 2 (2008): 277–84. http://dx.doi.org/10.1007/s10808-008-0038-y.

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11

Bekhta, Atiqa, Rachid Hsissou, Mohamed Berradi, Mehdi El Bouchti, and Ahmed Elharfi. "Viscosimetric and rheological properties of epoxy resin TGEUBA and their composite (TGEUBA/MDA/TGEMDA+TSP)." Results in Engineering 4 (December 2019): 100058. http://dx.doi.org/10.1016/j.rineng.2019.100058.

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12

Vraneš, Milan, Aleksandar Tot, Snežana Papović, Ksenija Pavlović, Pavle Jovanov та Slobodan Gadžurić. "Volumetric and viscosimetric properties of N -methyl-2-pyrrolidone with γ -butyrolactone and propylene carbonate". Journal of Chemical Thermodynamics 91 (грудень 2015): 301–12. http://dx.doi.org/10.1016/j.jct.2015.08.013.

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13

Wang, Bao Qin, Ze Ping Xu, and Nan Nan Liu. "Study on the Gelation Properties of the Glucan from Sclerotium rolfsii." Advanced Materials Research 581-582 (October 2012): 168–71. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.168.

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Objective: To study the gelation properties of glucan from Sclerotium rolfsii under the different condition. Methods: Using viscosimetric method to determine the influences of the different concentration, shear force, temperature, pH, and metal ions on the viscosity of glucan solution. Results: The viscosity of glucan solution increased with the concentration raised. The viscosity was 350 mPa.s at 0.16% and was 13927 mPa.s at 2.56% concentration, respectively. The viscosity of glucan solution varies inversely as with shear force. When the concentration was at 0.32 and 0.64%, the viscosity of t

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14

Shu, Xu-gang, Chun-li Wu, Cui-jin Li, Min Zhang, Ke Wan, and Xin Wu. "Synthesis, Crystal Structure, Spectroscopic Properties, and Interaction with Ct-DNA of Zn(II) with 2-Aminoethanethiol Hydrochloride Ligand." Bioinorganic Chemistry and Applications 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/2691253.

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The zinc(II) complex (C2H6NS)2Zn·ZnCl2was synthesized with 2-aminoethanethiol hydrochloride and zinc sulfate heptahydrate as the raw materials in aqueous solution. The composition and structure of the complex were characterized by elemental analysis, infrared spectra, single crystal X-ray diffraction, and thermogravimetry. The crystal structure of the zinc(II) complex belongs to monoclinic system, space groupP 21/n, with cell parameters ofa= 0.84294(4),b= 0.83920(4),c= 1.65787(8) nm,Z=2, andD= 2.041 g/cm3. In this paper, the interaction of complex with Ct-DNA was investigated by UV-visible and

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15

Basilio-Cortés, Ulin, Leopoldo González-Cruz, Gonzalo Velazquez, et al. "Effect of Dual Modification on the Spectroscopic, Calorimetric, Viscosimetric and Morphological Characteristics of Corn Starch." Polymers 11, no. 2 (2019): 333. http://dx.doi.org/10.3390/polym11020333.

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The effect of dual modification of corn starch, including hydrolysis and succinylation, were evaluated through peak viscosity (PV) analysis, differential scanning calorimetry (DSC), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. This dual modification was shown to increase the reaction efficiency (RE) and degree substitution (DS) compared with starches that were not subjected to acid hydrolysis pretreatment with a 44% and 45% increase respectively. After acid hydrolysis pretreatment, the surface of the corn starch granules exhibited e

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16

Sacco, Antonio, and Enrico Matteoli. "Isotopic substitution effects on the volumetric and viscosimetric properties of water-dimethylsulfoxide mixtures at 25°C." Journal of Solution Chemistry 26, no. 5 (1997): 527–35. http://dx.doi.org/10.1007/bf02767604.

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17

Faranda, Silvia, Giorgia Foca, Andrea Marchetti, Lorenzo Tassi, Alessandro Ulrici, and Claudia Zucchi. "Analysis of the Temperature and Composition Dependence of Viscosimetric Properties of 2-Butanone + 2-Butanol Solvent Mixtures." Journal of Solution Chemistry 33, no. 10 (2004): 1181–97. http://dx.doi.org/10.1007/s10953-004-7135-1.

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18

Dymond, J. H., and J. Robertson. "Transport properties of nonelectrolyte liquid mixtures?VI. Viscosimetric study of binary mixtures of hexafluorobenzene with aromatic hydrocarbons." International Journal of Thermophysics 6, no. 1 (1985): 21–41. http://dx.doi.org/10.1007/bf00505790.

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19

Begum, Syeda K., Ronald J. Clarke, M. Shamsuddin Ahmed, Shahanara Begum, and Mohammad A. Saleh. "Volumetric, viscosimetric and surface properties of aqueous solutions of triethylene glycol, tetraethylene glycol, and tetraethylene glycol dimethyl ether." Journal of Molecular Liquids 177 (January 2013): 11–18. http://dx.doi.org/10.1016/j.molliq.2012.09.015.

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20

Marsili, Lorenzo, Michele Dal Bo, Giorgio Eisele, Ivan Donati, Federico Berti, and Giuseppe Toffoli. "Characterization of Thermoresponsive Poly-N-Vinylcaprolactam Polymers for Biological Applications." Polymers 13, no. 16 (2021): 2639. http://dx.doi.org/10.3390/polym13162639.

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Poly-N-Vinylcaprolactam (PNVCL) is a thermoresponsive polymer that exhibits lower critical solution temperature (LCST) between 25 and 50 °C. Due to its alleged biocompatibility, this polymer is becoming popular for biomedical and environmental applications. PNVCL with carboxyl terminations has been widely used for the preparation of thermoresponsive copolymers, micro- and nanogels for drug delivery and oncological therapies. However, the fabrication of such specific targeting devices needs standardized and reproducible preparation methods. This requires a deep understanding of how the miscibil

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21

Pati, Siddhartha, Anil Chatterji, Bisnu Prasad Dash та ін. "Structural Characterization and Antioxidant Potential of Chitosan by γ-Irradiation from the Carapace of Horseshoe Crab". Polymers 12, № 10 (2020): 2361. http://dx.doi.org/10.3390/polym12102361.

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Natural product extraction is ingenuity that permits the mass manufacturing of specific products in a cost-effective manner. With the aim of obtaining an alternative chitosan supply, the carapace of dead horseshoe crabs seemed feasible. This sparked an investigation of the structural changes and antioxidant capacity of horseshoe crab chitosan (HCH) by γ-irradiation using 60Co source. Chitosan was extracted from the horseshoe crab (Tachypleus gigas; Müller) carapace using heterogeneous chemical N-deacetylation of chitin, followed by the irradiation of HCH using 60Co at a dose-dependent rate of

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22

Zartdinov, F. F., F. F. Zartdinova, A. L. Khokhlov, A. A. Glushchenko, and I. R. Salakhutdinov. "Investigations of the physical properties of camelina oil mixtures for hydraulic systems of agricultural machinery." Traktory i sel hozmashiny 84, no. 8 (2017): 41–46. http://dx.doi.org/10.17816/0321-4443-66340.

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The article considers the use of oils of vegetable origin alternative to mineral and synthetic oil products as a working fluid for hydraulic systems of agricultural machinery. When choosing vegetable oil, the use of camelina oil as a more affordable and economically cheap raw material is most appropriate. The main disadvantages of vegetable oils include low thermal and oxidative stability and unsatisfactory low-temperature properties. Therefore, the use of vegetable oils in hydraulic systems is possible only in the form of mixtures with mineral oil. To study the possibility of using vegetable-

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23

Aktar, Jesmin, Zahid Hasan, Tahmina Afroz, and Kamruzzaman Pramanik. "Application of gamma radiation and physicochemical treatment to improve the bioactive properties of chitosan extracted from shrimp shell." Nukleonika 62, no. 4 (2017): 245–51. http://dx.doi.org/10.1515/nuka-2017-0036.

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Abstract The aim of this study is to exploit a suitable chitosan extraction method from the chitin of indigenous shrimp shells by employing different physicochemical treatments and to improve different bioactive properties of this extracted chitosan (CS) by applying gamma radiation. Chitin was prepared from shrimp shell by pretreatment (deproteination, demineralization and oxidation). Chitosan was extracted from chitin by eight different methods varying different physicochemical parameters (reagent concentration, temperature and time) and assessed with respect to the degree of deacetylation, r

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24

Raszewski, Zbigniew, Wiktor Piecek, Leszek R. Jaroszewicz, et al. "High Birefringence Liquid Crystals Mixtures and their Selected Applications." Advanced Materials Research 909 (March 2014): 12–18. http://dx.doi.org/10.4028/www.scientific.net/amr.909.12.

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High-Birefringence Nematic Liquid Crystals Mixtures (HBNLCM) recently developed in the Military University of Technology (Poland) are presented in this paper. Dielectric, refractometric, viscosimetric and elastomeric characteristic were determined. The properties are discussed in terms of their applicability to electro-optical devices. Applying HBNLCM of LCM to space mission (Phobos Ground) applications for a space-borne laser rangefinder was developed, manufactured and tested under cooperation between Military University of Technology (MUT) in Poland and Vavilov State Optical Institute (Vavil

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25

Rivas, Bernabé L., and Kurt E. Geckeler. "Synthesis and properties of hydrophilic polymers, 5. Viscosimetric study on poly(acrylamide-co-4-vinylpyridine) and its interaction with metal ions in aqueous solution." Die Angewandte Makromolekulare Chemie 255, no. 1 (1998): 1–4. http://dx.doi.org/10.1002/(sici)1522-9505(19980301)255:1<1::aid-apmc1>3.0.co;2-a.

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26

El Bachtioui, Manale, Ilham Abala, Mohamed Lifi, Mohamed Dakkach, Mohamed Allouch, and Fernando Aguilar. "Measurement, correlation, and modeling of volumetric, viscosimetric, acoustic, and optical properties in ternary mixtures of alcohols, ethers, and hydrocarbons between 298.15 and 313.15 K." Journal of Chemical Thermodynamics 210 (November 2025): 107535. https://doi.org/10.1016/j.jct.2025.107535.

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27

Li, Xin-Xue, Gui-Chen Fan, Yan-Wei Wang, Min Zhang, and Yi-Qiang Lu. "Volumetric and viscosimetric properties of the binary mixture of triethylene glycol monomethyl ether+water at T=(293.15, 303.15, 313.15, 323.15, 333.15) K under atmospheric pressure." Journal of Molecular Liquids 151, no. 1 (2010): 62–66. http://dx.doi.org/10.1016/j.molliq.2009.11.005.

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28

Bozhko, T. V., R. S. Donchevska, and R. P. Romanenko. "The rheological properties of cream liqueurs and their changes in the transportation process." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 21, no. 91 (2019): 149–56. http://dx.doi.org/10.32718/nvlvet-f9125.

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In order to determine the stability of colloidal systems of cream liqueurs with cycloractate and egg yolks, their rheological properties after production and during transportation, which was simulated through centrifugation and shaking, study, had been studied. Kinematic viscosity was determined by viscosimetric method using a graduated glass unit and a “Universal Computer Measuring Instrument” manufactured by “ITM Ltd.”, Kharkiv, Ukraine. The coefficient of surface tension was investigated by the method of detachment of the ring from the surface of the test substance, and the density – by the

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Dupuis, Guillaume, David Rousseau, René Tabary, and Bruno Grassl. "Flow of Hydrophobically Modified Water-Soluble Polymers in Porous Media: Controlled Resistance Factors vs. Flow-Induced Gelation in the Semidilute Regime." SPE Journal 17, no. 04 (2012): 1196–206. http://dx.doi.org/10.2118/140779-pa.

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Summary The associative properties of hydrophobically modified water soluble polymers (HMWSPs) are attractive for improved oil recovery (IOR) because of both their enhanced thickening capability, compared with classical water-soluble polymers (for mobility-control applications), and their permeability-reduction, or plugging, ability (for well-treatment applications). In previous works, we have studied the injectivity of HMWSP made of sulfonated polyacrylamide backbones and alkyl side chains in the dilute regime and have shown, in particular, that it was largely governed by adsorption. In this

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G., Yadang, Panyo’o Akdowa E., Beka R. G., Djuikwo Konga R. V., Mbome Lape I., and Ndjouenkeu R. "Comparison of Carbohydrate and Pasting Profile of Sweet Potato (Ipomoea batatas L. Lam) Flour from Three Agro-Ecological Zones in Cameroon." European Journal of Nutrition & Food Safety 17, no. 6 (2025): 198–205. https://doi.org/10.9734/ejnfs/2025/v17i61750.

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Processing sweet potato tubers into flour is the most common way of making a variety of food products, particularly in traditional cooking, baking and pastry-making. However, this flour can also be used in baby food to prepare porridges. The present work highlights a comparative study of the carbohydrate potential of sweet potatoes from three agro-ecological zones that constitute the tuber's production basins in Cameroon in regards of an improved variety. The tubers were processed into flour after peeling, washing, slicing, drying and sieving. Different carbohydrate compounds contents were det

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Kinart, Cezary M., Magdalena Klimczak, and Wojciech Kinart. "Viscosimetric and structural properties of binary mixtures of 2-butoxyethanol with ethylene glycol, diethylene glycol, triethylene glycol and tetraethylene glycol systems atT = 293.15, 298.15 and 303.15 K." Physics and Chemistry of Liquids 49, no. 2 (2011): 181–91. http://dx.doi.org/10.1080/00319100903191405.

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32

Suwonsichon, T., and M. Peleg. "Imperfect squeezing flow viscosimetry for commercial refried beans / Viscosimetría de extensión biaxial imperfecta de frijoles refritos." Food Science and Technology International 5, no. 2 (1999): 159–66. http://dx.doi.org/10.1177/108201329900500205.

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The imperfect squeezing flow patterns of almost intact canned fat free and vegetarian refried beans of two national brands were determined using all Teflon and grooved metal sensors. The force versus height curves were remarkably reproducible and characteristic of the products and brands irrespec tive of the upper plate's diameter and the sensor's finish. Both types of product had a very high degree of plasticity but those of one brand were more sensitive to the deformation rate. The consis tency of the corresponding products of the two brands could be compared in terms of an apparent stress a

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33

Манжай, Владимир Николаевич. "Влияние структурно-группового состава нефти на ее реологические свойства и размеры сложных структурных единиц". SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 2, № 15 (2025): 159–65. https://doi.org/10.28999/2541-9595-2025-15-2-159-165.

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Рассмотрено влияние температуры и скорости (напряжения) сдвига в ротационном вискозиметре на реологические свойства простых (низкомолекулярных) углеводородных жидкостей и нефтяных дисперсных систем различных месторождений. Используя экспоненциальное уравнение Аррениуса – Френкеля – Эйринга, рассчитаны энергии активации течения этих жидких систем, которые для асфальтосмолистой и парафинистой нефти оказались заметно больше, чем для простейших углеводородных жидкостей. Установлено, что отличия в неньютоновском поведении нефтей трех разных месторождений обусловлено их различным структурно-групповы

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Diamant, Viktor. "MODERN RESEARCH METHODS OF PHYSICOCHEMICAL AND ELECTROCHEMICAL PROPERTIES OF ELECTROLYTES IN FOR Li-ION BATTERIES AND HYBRID SUPERCAPACITIES." Ukrainian Chemistry Journal 87, no. 6 (2021): 82–96. http://dx.doi.org/10.33609/2708-129x.87.06.2021.82-96.

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In review examineі base properties of modern non-aqueous electrolytes for li-ion batteries and hybrid supercapacities taking part in the formation of power density, electrochemical and thermal stability. Discussed such aspects as the electrolytes functions in electrochemical power sources, physicochemical and electrochemical properties of electrolytes for supercapacitors, the physicochemical and electrochemical properties of electrolytes for primary and secondary batteries, and methods of electrolytes research. As the base methodі for electrolytes studies considered: electrochemical impedance

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Pham, Q. D., and P. V. Surukov. "Rheological properties of dispersed-filled polymer composite materials based on polyethylene containing glass microbeads." Plasticheskie massy, no. 7-8 (September 18, 2021): 35–38. http://dx.doi.org/10.35164/0554-2901-2021-7-8-35-38.

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This article presents the results of a study of the effect of the filler content on the rheological properties of polymer composite materials based on high density polyethylene containing glass microbeads. The flow curves of the compositions were obtained by the method of capillary viscosimetry. Simple mathematical models have been constructed that allow estimating the viscosity of the compositions’ melts based on a given filler content.

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Barannikov, Mikhail V., Yuri M. Bazarov, Tamara S. Usacheva, and Oscar I. Koifman. "CHANGING SOME PA-6 PROPERTIES AT ITS SYNTHESIS BELOW MELTING POINT." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 59, no. 4 (2018): 63. http://dx.doi.org/10.6060/tcct.20165904.5309.

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This paper presents the fractionation of PA-6 obtained at temperature below its melting point. Unfractionated samples and polymer fractions were studied by viscosimetry, thermogravimetry (TG, DTG) and differential scanning calorimetry (DTA). It was shown that at the first step of synthesis the polymer is formed with a predominantly linear structure and high parameters of thermal properties. At the second synthesis step the molecular weight of the polymer and its thermal properties increase and subsequent demonomerization-drying is accompanied by a further increase in the polyamide molecular we

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37

Nasonov, F. A., V. M. Aleksashin, D. A. Melnikov, and S. V. Bukharov. "Zinc-stearate modification of epoxy resins and carbon plastics based on them and its influence on the basic technological properties of the composition." Voprosy Materialovedeniya, no. 3(95) (January 10, 2019): 146–56. http://dx.doi.org/10.22349/1994-6716-2018-95-3-146-156.

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The influence of the special modification of epoxy resins and polymer composites based on them on the basic technological properties of the composition is investigated. Modification is performed in order to reduce the opening damage. The most important technological properties of the initial epoxy composition and modified technological additives are studied and compared by standard methods (viscosimetry, thermoanalytical methods). A kinetic model of the curing process was created, the experimental production of samples from plastics filled with carbon long filler (impregnation under pressure,

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Manzhai, V. N., S. G. Kulyshkina, L. V. Chekantseva, and I. G. Yashchenko. "COMPOSITION AND STRUCTURE OF HIGH-VISCOSITY OILS FROM VARIOUS DEPOSITS." Oil and Gas Studies, no. 1 (March 1, 2018): 112–18. http://dx.doi.org/10.31660/0445-0108-2018-1-112-118.

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The article presents the results of investigations of oil samples from various deposits. The samples contain asphaltenes, resins and paraffins in different concentrations. It is established that all oil samples are non-Newtonian fluids and they have pseudoplastic properties. Due to the results of experiments, which were carried out by the method of rotational viscosimetry, size of complex structural units of oils at various sliding velocities was calculated.

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Van Opdenbosch, Daniel, Martin Kretschmer, Oliver Lieleg, and Cordt Zollfrank. "Free volumes in mixed-tacticity poly(3-hydroxybutyrate) determined by viscosimetry and their correlations with structural features and mechanical properties." Applied Rheology 32, no. 1 (2022): 56–68. http://dx.doi.org/10.1515/arh-2022-0125.

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Abstract The viscosities of poly(3-hydroxybutyrate) (PHB) with mixed tacticities were determined as functions of temperature and shearing rate via plate–plate viscosimetry, and fitted by a combined Herschel–Bulkley–Cross–Doolittle model while applying Carvalho et al.’s single-point correction. They were compared to values of slit viscosimetry, obtained during processing at a temperature of 428 K. In both cases, measured values and fitted model parameters as a function of tacticity exhibited a discontinuous behaviour at a fraction of meso diads of 0.7. To further investigate, we calculated valu

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Shinkwin, C. A., G. E. Murty, R. Simo, and N. S. Jones. "Per-operative antibiotic/steroid prophylaxis of tympanostomy tube otorrhoea: chemical or mechanical effect?" Journal of Laryngology & Otology 110, no. 6 (1996): 531–33. http://dx.doi.org/10.1017/s0022215100134188.

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AbstractThe per-operative instillation of ototopical antibiotic/steroid drops reduces the incidence of early otorrhoea after tympanostomy tube insertion. Whether this is due to the chemical properties of the antibiotic/steroid or simply the mechanical instillation of fluid is unclear. In this paired matched study of 161 subjects Gentisone HC was shown to significantly reduce the otorrhoea rate compared to normal saline (1.24 per cent compared with 9.32 per cent, p<0.005, difference 8.07 per cent, 95 per cent confidence interval for difference 3.21 per cent to 12.93 per cent). Capillary visc

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Wang, Chao, Bi Jun Xie, and Bin Li. "Preparation and Characterisation of Konjac Glucomannan (KGM)/SiO₂ Nanoparticles Blend Film." Advanced Materials Research 194-196 (February 2011): 1431–36. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1431.

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A novel nanocomposite films was prepared by dispersing SiO2 nanoparticles in aqueous konjac glucomanan (KGM) solution. The structure and miscibility of the nanocomposite materials were determined finely by viscosimetry, Fourier transformed infrared spectra (FTIR), micropolariscope (POM), scanning electron microscopy (SEM) and ultraviolet-visible spectrophotometer (UV-Vis). The results indicated that there was a strong interaction between KGM and SiO2 in ethanolamine. The miscibility and ultraviolet-absorption properties of KGM/SiO2 nanoparticles blend film were improved by ball milling treatme

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Makarewicz, Edwin, and Anna Zalewska. "Sedimentation of water dispersed systems of acrylate copolymers in xylene." Polish Journal of Chemical Technology 10, no. 3 (2008): 29–34. http://dx.doi.org/10.2478/v10026-008-0032-4.

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Sedimentation of water dispersed systems of acrylate copolymers in xylene Methyl methacrylate - butyl acrylate - methacrylic acid copolymer and butyl methacrylate - methacrylic acid amide copolymer of a different segmental structure were stabilised with non-ionic and anionic surfactants. Gel chromatography, viscosimetry, tensiometry, conductometry and sedimentation methods were applied to define the properties of the synthesized copolymers, surfactants in water solutions and water dispersions. The types and the properties of the phases being in a state of sedimentation balance were also determ

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Osovskaya, Iraida Ivanovna, Anastasia Maksimovna Borodina, Aleksandr Vyacheslavovich Kurzin, and Victor Ivanovich Roshchin. "SYNTHESIS AND PROPERTIES OF MODIFIED XANTHAN GUM." chemistry of plant raw material, no. 4 (December 14, 2021): 95–104. http://dx.doi.org/10.14258/jcprm.2021049525.

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Xanthan gum is widely used as a stabilizing, emulsifying, thickening agent in pharmacology, medicine, food, oil, paint, textile, perfume, mining and agriculture. For food purposes, potassium, sodium or calcium salts of xanthan formed by carboxyl groups of glucuronic acid and pyruvate group are used. Currently, xanthan gum is not produced on an industrial scale in Russia. There are repeated attempts to create industries in various regions of the country. The paper synthesizes hydrophobized acetylated xanthan gum derivatives with different degrees of substitution. Physical-chemical and col

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Vishnevetskii, Dmitry V., Arif R. Mekhtiev, Dmitry V. Averkin, and Elizaveta E. Polyakova. "Cysteine–Silver–Polymer Systems for the Preparation of Hydrogels and Films with Potential Applications in Regenerative Medicine." Gels 9, no. 12 (2023): 924. http://dx.doi.org/10.3390/gels9120924.

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Herein, the problem concerning the poorer mechanical properties of gels based on low molecular weight gelators (LMWGs)—L-cysteine and silver nitrate—was solved by the addition of various polymers—polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP) and polyethylene glycol (PEG)—to the initial cysteine–silver sol (CSS). The physicochemical methods of analysis—viscosimetry, UV spectroscopy, DLS, and SEM—identified that cysteine–silver hydrogels (CSG) based on PVA possess the best rheological properties and porous microstructure (the average pore size is 2–10 µm) compared to gels without the poly

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Águila-Almanza, Eva, René Salgado-Delgado, Zully Vargas-Galarza, Edgar García-Hernández, and Heriberto Hernández-Cocoletzi. "Enzymatic Depolimerization of Chitosan for the Preparation of Functional Membranes." Journal of Chemistry 2019 (February 13, 2019): 1–8. http://dx.doi.org/10.1155/2019/5416297.

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This work reports the study of chitosan depolymerization through the synergy of the Celuzyme® XB enzyme complex; it is composed of cellulase, xylanase, andβ-glucanase. The optimal conditions of temperature, pH, and concentration were determined to verify the depolymerization reaction. The specificity of the enzymes at theβ(1-4) glycosidic link site was checked. Low molecular weight chitosan (64 × 103 g·mol−1) with degree of acetylation 15% was obtained. The depolymerized chitosan products were characterized by infrared spectroscopy, the degree of acetylation was obtained by UV-Vis spectroscopy

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Khokhryakov, A. A., M. A. Samoilova, V. V. Ryabov, and L. B. Vedmid’. "EFFECTIVE VISCOSITY AND GLASS TRANSITION TEMPERATURE OF Cs<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub> MELTS." Расплавы, no. 6 (November 1, 2023): 614–23. http://dx.doi.org/10.31857/s0235010623060026.

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Effective viscosity (viscoelasticity) of cesium and boron oxides melts was measured at temperatures 900–1600 K and concentrations 0 ≤ x ≤16 mol % Cs2O by vibration viscosimetry. It was shown that vibration leads to non-Newtonian flow of melts. This means that not only configuration activation energy, the switching energy of bridging oxygen bonds but also the elastic energy of structural units of melts associated with activation energy of viscous flow. Using parameters under conditions of Newtonian and non-Newtonian flow of melts, shear viscosity η', elastic modulus G' and stored viscosity η''

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Salami, Chefikou, Jean-Pierre Mbakidi, Sandra Audonnet, Sylvie Brassart-Pasco, and Sandrine Bouquillon. "Extraction of Curcuminoids and Carvacrol with Biobased Ionic Liquids—Evaluation of Anti-Cancer Properties of Curcuminoid Extracts." Molecules 30, no. 5 (2025): 1180. https://doi.org/10.3390/molecules30051180.

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Six biobased ionic liquids were prepared from saturated fatty acids (octanoic, decanoic and dodecanoic acids) and choline with yields up to 90% following procedures respecting green chemistry principles. These ionic liquids were fully characterized (NMR, IR, elemental analysis, viscosimetry and TGA) and used as extraction solvents for bioactive compounds (curcuminoids and carvacrol) using classical conditions, and the ionic liquids were able to be recovered after five runs without loss of activity. The ionic liquid containing a C12 carbon chain was the best extracting solvent, extracting 95% o

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Frénoy, J. P. "Effect of physical environment on the conformation of ricin Influence of low pH." Biochemical Journal 240, no. 1 (1986): 221–26. http://dx.doi.org/10.1042/bj2400221.

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The molecular properties of ricin (the toxic lectin from Ricinus communis seeds, RCA II or RCA 60) were evaluated by analytical ultracentrifugation, viscosimetry, c.d., fluorescence and equilibrium dialysis. Measurements of sedimentation (S0(20,W) = 4.60 S) and viscosity (eta = 2.96 × 10(-2) dl/g) indicated that, at neutral pH, the ricin molecule is very compact. Various transitions were explored, and a pH-triggered change in the ricin conformation was observed between pH 7 and 4. In this range, the sedimentation coefficient, far-u.v. c.d. and fluorescence altered simultaneously without unfold

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Soldatova, AE, AY Tsegelskaya, GK Semenova, et al. "One-pot synthesis of semicrystalline polyamide imide based on 4,4’-diaminobenzanilide and 2,2-propylidene-bis(1,4-phenyleneoxy)diphthalic anhydride in molten benzoic acid." High Performance Polymers 31, no. 1 (2018): 63–71. http://dx.doi.org/10.1177/0954008317750891.

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High-temperature thermoplastic semicrystalline polyamide imide (PAI) with Tg = 250°C, and Tm = 370°C was synthesized from 4,4’-diaminobenzanilide, and 2,2-propylidene-bis (1,4-phenyleneoxy) diphthalic anhydride using three different methods: one-pot high-temperature catalytic polycondensation in molten benzoic acid (BA), low-temperature polycondensation (LTP) in dimethylacetamide (DMAA) followed by chemical imidization, and LTP followed by imidization. The influence of the synthetic route on the crystallinity of PAI was studied by wide-angle X-ray scattering. The PAI synthesized in molten BA c

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Surikov, P. V., N. L. Shembel, A. A. Yurkin, A. V. Petrogradsky, V. D. Sevruk, and I. D. Simonov-Emelyanov. "PROCESSING ADDITIVES AND RHEOLOGICAL PROPERTIES OF MOLDED PHENOLIC PLASTICS." Fine Chemical Technologies 14, no. 1 (2019): 90–96. http://dx.doi.org/10.32362/2410-6593-2019-14-1-90-96.

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By the method of capillary viscosimetry, the melt flow curves of the molded phenolic resin and its compositions with lubricant, plasticizer and their mixture were obtained. It was shown that the size (diameter) of the capillary channel influences the dependence of the effective shear rate on the shear stress (flow curves) of the studied compositions. Such rheological behavior of the compositions during flow is associated with the effect of sliding along the surface of the capillary wall. According to the Mooney method, the dependences of the effective shear rate at given values of shear stress

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