Modeling swelling behavior of hydrogels in aqueous organic solvents

Islam, Md Rashedul; Tanveer, Sheik; Chen, Chau-Chyun

doi:10.1016/j.ces.2021.116744

Modeling swelling behavior of hydrogels in aqueous organic solvents

Journal Article · Thu May 06 00:00:00 EDT 2021 · Chemical Engineering Science

DOI:https://doi.org/10.1016/j.ces.2021.116744· OSTI ID:1976942

Islam, Md Rashedul ^[1]; Tanveer, Sheik ^[2]; Chen, Chau-Chyun ^[2]

Texas Tech University, Lubbock, TX (United States); OSTI
Texas Tech University, Lubbock, TX (United States)

Hydrogel, a three-dimensional elastic structure of cross-linked polymer chains, swells or deswells when immersed in aqueous organic solutions. The swelling of hydrogels depends on temperature, solvent composition, and hydrogel structure as the thermodynamic driving forces for hydrogel swelling are due to solvent – hydrogel interactions and expansion of elastic network. Here in this work, polymer Nonrandom Two-Liquid activity coefficient model is used to account for the solvent – hydrogel interactions and a semi-empirical expression for rubber elasticity is used to describe the expansion of elastic network. The model successfully correlates data for both swelling and equilibrium phase compositions for n-isopropyl acrylamide hydrogels in water – ethanol, water – acetone, water – n-butanol, and water – methyl isobutyl ketone mixed solvents.

View Accepted Manuscript (DOE)

Research Organization:: Texas Tech University, Lubbock, TX (United States)

Sponsoring Organization:: J.F Maddox Foundation; USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0007888

OSTI ID:: 1976942

Alternate ID(s):: OSTI ID: 1783415

Journal Information:: Chemical Engineering Science, Journal Name: Chemical Engineering Science Journal Issue: C Vol. 242; ISSN 0009-2509

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

42 ENGINEERING
aqueous organic solvents
hydrogel swelling
polymer NRTL activity coefficient model
swelling equilibrium composition

Modeling swelling behavior of hydrogels in aqueous organic solvents

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