The Structure of Polymer Clusters in Aqueous Solutions of Hydroxypropyl Cellulose
DOI:
https://doi.org/10.15407/ujpe64.3.238Keywords:
hydroxypropyl cellulose, globule, rigid-chain polymerAbstract
The viscosity, turbidity, and heat capacity of dilute aqueous solutions of hydroxypropyl cellulose have been studied in a concentration interval of 0.047–1.5 g/l and a temperature interval of 20–80 ∘C. The data obtained testify that, if the temperature does not exceed 40 ∘C, hydroxypropyl cellulose molecules are prolate spheroidal globules with semiaxis lengths of 7 and 490 ˚ A. At temperatures above 70 ∘C, the hydroxypropyl cellulose solution consists of clusters; every cluster is composed of 11 globules and has a prolate spheroidal form with semiaxes of 41 and 490 ˚ A. In the temperature interval from 40 to 70 ∘C, the solution concerned contains both globules and clusters, with the concentration of the latter increasing, as the temperature grows.
References
A.R. Khokhlov, A.Yu. Grosberg. Statistical Physics of Macromolecules (AIP Press, 1994) [ISBN: 978-1563960710].
Rheology. Vol. 5: Theory and Applications. Edited by F.R. Eirich (Academic Press, 2014) [ISBN: 978-1483252674].
S. Fortin, G. Charlet. Phase diagram of aqueous solutions of (hydroxypropyl)cellulose. Macromolecules 22, 2286 (1989). https://doi.org/10.1021/ma00195a050
S. Guido. Phase behavior of aqueous solutions of hydroxypropyl cellulose. Macromolecules 28, 4530 (1995). https://doi.org/10.1021/ma00117a023
Y. Guan, Y. Zhang, T. Zhoua, S. Zhou. Stability of hydrogen-bonded hydroxypropylcellulose/poly(acrylic acid) microcapsules in aqueous solutions. Soft Matter 5, 842 (2009). https://doi.org/10.1039/b815913k
Hydroxypropyl cellulose [https://www.guidechem.com/dictionary/en/9004-64-2.html].
O.M. Alekseev, M.M. Lazarenko, G.O. Puchkovs'ka, T.V. Bezrodnaya, A.A. Sendzyuk. Peculiarities of the thermal motion in crystals formed by cetyltrimethylammonium bromide molecules. Ukr. J. Phys. 55, 973 (2010).
L.D. Landau, E.M. Lifshitz. Course of Theoretical Physics. Vol. 6: Fluid Mechanics (Elsevier, 2013) [ISBN: 978-0750627672].
W. Kuhn, H. Kuhn. Die Abh?angigkeit der Viskosit?at vom Str?omungsgef?alle bei hochverd?unnten Suspensionen und L?osungen. Helv. Chim. Acta. 28, 97 (1945). https://doi.org/10.1002/hlca.19450280111
C.F. Bohren, D.R. Huffman. Absorption and Scattering of Light by Small Particles (Wiley, 1998) [ISBN: 978-0-471-29340-8]. https://doi.org/10.1002/9783527618156
Downloads
Published
How to Cite
Issue
Section
License
Copyright Agreement
License to Publish the Paper
Kyiv, Ukraine
The corresponding author and the co-authors (hereon referred to as the Author(s)) of the paper being submitted to the Ukrainian Journal of Physics (hereon referred to as the Paper) from one side and the Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, represented by its Director (hereon referred to as the Publisher) from the other side have come to the following Agreement:
1. Subject of the Agreement.
The Author(s) grant(s) the Publisher the free non-exclusive right to use the Paper (of scientific, technical, or any other content) according to the terms and conditions defined by this Agreement.
2. The ways of using the Paper.
2.1. The Author(s) grant(s) the Publisher the right to use the Paper as follows.
2.1.1. To publish the Paper in the Ukrainian Journal of Physics (hereon referred to as the Journal) in original language and translated into English (the copy of the Paper approved by the Author(s) and the Publisher and accepted for publication is a constitutive part of this License Agreement).
2.1.2. To edit, adapt, and correct the Paper by approval of the Author(s).
2.1.3. To translate the Paper in the case when the Paper is written in a language different from that adopted in the Journal.
2.2. If the Author(s) has(ve) an intent to use the Paper in any other way, e.g., to publish the translated version of the Paper (except for the case defined by Section 2.1.3 of this Agreement), to post the full Paper or any its part on the web, to publish the Paper in any other editions, to include the Paper or any its part in other collections, anthologies, encyclopaedias, etc., the Author(s) should get a written permission from the Publisher.
3. License territory.
The Author(s) grant(s) the Publisher the right to use the Paper as regulated by sections 2.1.1–2.1.3 of this Agreement on the territory of Ukraine and to distribute the Paper as indispensable part of the Journal on the territory of Ukraine and other countries by means of subscription, sales, and free transfer to a third party.
4. Duration.
4.1. This Agreement is valid starting from the date of signature and acts for the entire period of the existence of the Journal.
5. Loyalty.
5.1. The Author(s) warrant(s) the Publisher that:
– he/she is the true author (co-author) of the Paper;
– copyright on the Paper was not transferred to any other party;
– the Paper has never been published before and will not be published in any other media before it is published by the Publisher (see also section 2.2);
– the Author(s) do(es) not violate any intellectual property right of other parties. If the Paper includes some materials of other parties, except for citations whose length is regulated by the scientific, informational, or critical character of the Paper, the use of such materials is in compliance with the regulations of the international law and the law of Ukraine.
6. Requisites and signatures of the Parties.
Publisher: Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine.
Address: Ukraine, Kyiv, Metrolohichna Str. 14-b.
Author: Electronic signature on behalf and with endorsement of all co-authors.
.png){kind=small}
