RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS

Mihail Silin; Lyubov&#039; Magadova; Liana Gazaleeva

doi:10.55421/3034-4689_2026_29_6_43

RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS

Published in Herald of Technological University · Pages 43–48 · Rubric: 2. Chemical Technology

DOI: https://doi.org/10.55421/3034-4689_2026_29_6_43 · EDN: MKFVOK

Received: 19.05.2026 Accepted: 16.06.2026 Published: 02.07.2026

Authors

Mihail Silin

Lyubov' Magadova

Liana Gazaleeva

Mihail Silin

Gubkin Russian State University of Oil and Gas

Lyubov' Magadova

Academic degree: doctor of technical sciences

Gubkin Russian State University of Oil and Gas

Liana Gazaleeva

Russian State University of Oil and Gas named after IM Gubkin Department of Chemical Technology for the Oil and Gas Industry · Moscow

ABSTRACT

Water-soluble polymers are classified as natural (xanthan, guar, native cellulose), artificial (modified cellulose), and synthetic (polyacrylamide). Due to their ability to increase water viscosity, these polymers are widely used in chemical enhanced oil recovery methods (polymer, surfactant-polymer, and alkali-surfactant-polymer flooding). Despite the high resistance of biopolymers to degradation under the influence of highly mineralized formation water and elevated temperatures, the most common representative of this class is polyacrylamide (hydrolyzed, sulfonated). However, its significant limitation is its susceptibility to degradation, the formation of insoluble globules, and, consequently, a decrease in viscosity. Traditionally, the resistance of polyacrylamide to chemical, mechanical, or thermal-oxidative degradation has been assessed by a decrease in the screen factor or dynamic viscosity. In this study, the solubility and the effect of increasing the mineralization of model water are assessed using a viscometric method (relative method) to determine the intrinsic viscosity and molecular weight of anionic acrylamide copolymers. The Huggins coefficient, Kuhn segment, hydrodynamic radius, and macromolecular coil volume were calculated using the molecular weight and intrinsic viscosity values. Increasing the mineralization of the sample water leads to a decrease in the intrinsic viscosity, molecular weight, hydrodynamic radius, and macromolecular coil volume. For a sulfonated sample synthesized for high mineralization and reservoir temperature conditions, the Huggins constant decreases with a simultaneous increase in the Kuhn segment (hardness), indicating good affinity between the polymer and solvent and the applicability of PAM under the selected conditions. This method for determining solubility and stability under challenging reservoir conditions can be recommended in addition to the method for determining the stability coefficient by measuring the screen factor or dynamic viscosity.

KEYWORDS

POLYACRYLAMIDE, DISSOLUTION, HUGGINS COEFFICIENT, KUHN SEGMENT, HYDRODYNAMIC RADIUS, CAPILLARY VISCOMETRY

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GOST

Silin M. A., Magadova L. A., Gazaleeva L. R. RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS // . 2026. pp. 43-48. DOI: https://doi.org/10.55421/3034-4689_2026_29_6_43. EDN: MKFVOK. (Date of access 20.08.2026).

MLA

Mihail Silin, Magadova L. A., Gazaleeva L. R.. "RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS." (2026): 43-48. DOI: https://doi.org/10.55421/3034-4689_2026_29_6_43. EDN: MKFVOK.

APA

Silin M. A., Magadova L. A., Gazaleeva L. R. (2026). RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS. , 43-48. https://doi.org/10.55421/3034-4689_2026_29_6_43 EDN: MKFVOK.

Chicago

Mihail Silin, Magadova L. A., Gazaleeva L. R.. "RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS." , no. (2026): 43-48. https://doi.org/10.55421/3034-4689_2026_29_6_43. EDN: MKFVOK.

WIKI

{{cite journal | author = Silin M. A., Magadova L. A., Gazaleeva L. R. | title = RESEARCH OF PHYSICAL PARAMETERS OF SOLUBILITY OF MACROMOLECULES OF ANIONIC COPOLYMERS OF ACRYLAMIDE IN MODEL WATERS | journal = | year = 2026 | pages = 43-48 | doi = 10.55421/3034-4689_2026_29_6_43 }} EDN: MKFVOK

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