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Название: | Role of particle clusters on the rheology of magneto-polymer fluids and gels |
Авторы: | Suarez-Fernandez, W. R. Scionti, G. Duran, J. D. G. Zubarev, A. Yu. Lopez-Lopez, M. T. |
Дата публикации: | 2020 |
Издатель: | Royal Society Publishing |
Библиографическое описание: | Role of particle clusters on the rheology of magneto-polymer fluids and gels / W. R. Suarez-Fernandez, G. Scionti, J. D. G. Duran, A. Yu. Zubarev, et al.. — DOI 10.1098/rsta.2019.0254 // Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. — 2020. — Vol. 2171. — Iss. 378. — 254. |
Аннотация: | Even in the absence of cross-linking, at large enough concentration, long polymer strands have a strong influence on the rheology of aqueous systems. In this work, we show that solutions of medium molecular weight (120 000-190 000 g mol−1) alginate polymer retained a liquid-like behaviour even for concentrations as large as 20% w/v. On the contrary, solutions of alginate polymer of larger (and also polydisperse) molecular weight (up to 600 000 g mol−1) presented a gel-like behaviour already at concentrations of 7% w/v. We dispersed micrometre-sized iron particles at a concentration of 5% v/v in these solutions, which resulted in either stable magnetic fluids or gels, depending on the type of alginate polymer employed (medium or large molecular weight, respectively). These magneto-polymer composites presented a shear-thinning behaviour that allowed injection through a syringe and recovery of the original properties afterwards. More interestingly, application of a magnetic field resulted in the formation of particle clusters elongated along the field direction. The presence of these clusters intensely affected the rheology of the systems, allowing a reversible control of their stiffness. We finally developed theoretical modelling for the prediction of the magnetic-sensitive rheological properties of these magneto-polymer colloids. © 2020 The Author(s) Published by the Royal Society. All rights reserved. |
Ключевые слова: | ALGINATE MAGNETIC FLUIDS OR GELS MAGNETO-POLYMER PARTICLE CLUSTERS RHEOMETRY SHEAR THINNING ALGINATE CROSSLINKING ELASTICITY GELS MAGNETISM MOLECULAR WEIGHT SHEAR THINNING SOLS ALGINATE POLYMERS FIELD DIRECTIONS PARTICLE CLUSTERS POLYMER COLLOIDS POLYMER COMPOSITE REVERSIBLE CONTROL RHEOLOGICAL PROPERTY THEORETICAL MODELLING POLYDISPERSITY |
URI: | http://elar.urfu.ru/handle/10995/92670 |
Условия доступа: | info:eu-repo/semantics/openAccess |
Идентификатор SCOPUS: | 85083321333 |
Идентификатор WOS: | 000526681700001 |
Идентификатор PURE: | 12665400 |
ISSN: | 1364503X |
DOI: | 10.1098/rsta.2019.0254 |
Сведения о поддержке: | Agencia Estatal de Investigación, AEI Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2020-0051 European Regional Development Fund, FEDER Agencia Estatal de Investigación, AEI European Commission, EC: FIS2017-85954-R 19-52-12028 Ministerio de EconomÃa y Competitividad, MINECO Ministerio de EconomÃa, Industria y Competitividad, Gobierno de España, MINECO European Regional Development Fund, FEDER Agencia Estatal de Investigación, AEI European Regional Development Fund, FEDER European Commission, EC: FIS2017-85954-R Agencia Estatal de Investigación, AEI Ministerio de EconomÃa y Competitividad, MINECO Ministerio de EconomÃa, Industria y Competitividad, Gobierno de España, MINECO European Regional Development Fund, FEDER Data accessibility. This article does not contain any additional data. Authors’contributions. W.R.S.-F.:substantialcontributionstoacquisitionofdata;draftingthearticle;finalapproval of the version to be published. G.S.: substantial contributions to conception and design; revising the article critically for important intellectual content; final approval of the version to be published. J.D.G.D. and A.Y.Z.: substantial contributions to conception and design, and analysis and interpretation of data; revising the article critically for important intellectual content; final approval of the version to be published. M.T.L.-L.: substantial contributions to conception and design, analysis and interpretation of data; drafting the article; final approval of the version to be published. Competing interests. We declare we have no competing interests. Funding. W.R.S.-F. acknowledges financial support by the UTE University of Ecuador through paid licenses for trips and stays from Ecuador to Spain. J.D.G.D. received support from the Ministerio de Economía, Industria y Competitividad, MINECO, and Agencia Estatal de Investigación, AEI, Spain, cofounded by Fondo Europeo de Desarrollo Regional, FEDER, European Union, project FIS2017-85954-R. A.Y.Z. acknowledges the programme of the Ministry of Education and Science of the Russian Federation, project FEUZ-2020-0051, as well as the Russian Fund of Basic Researches, project 19-52-12028. M.T.L.-L. received support from the Ministerio de Economía, Industria y Competitividad, MINECO, and Agencia Estatal de Investigación, AEI, Spain, cofounded by Fondo Europeo de Desarrollo Regional, FEDER, European Union, project FIS2017-85954-R. Acknowledgements. The authors acknowledge Cristina Gila-Vilchez for help with optical microscopy. |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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10.1098-rsta.2019.0254.pdf | 1,95 MB | Adobe PDF | Просмотреть/Открыть |
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