Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/146563
Title: Model for the phase separation of poly(N-isopropylacrylamide)–clay nanocomposite hydrogel based on energy-density functional
Authors: Bao, Xuelian
Li, Hua
Zhang, Hui
Keywords: Science::Physics
Issue Date: 2020
Source: Bao, X., Li, H., & Zhang, H. (2020). Model for the phase separation of poly(N-isopropylacrylamide)–clay nanocomposite hydrogel based on energy-density functional. Physical Review E, 101(6), 062118-. doi:10.1103/physreve.101.062118
Journal: Physical Review E 
Abstract: The time-dependent Ginzburg-Landau (TDGL) mesoscopic method is utilized to simulate the phase separation of the poly(N-isopropylacrylamide)–clay nanocomposite hydrogel in the three-dimensional case, where the Cahn-Hilliard-Cook equation with a proposed free energy, which consists of the stretching and mixing energy based on Flory's mean theory, is considered. The main features of the presently proposed model include the following: (i) the proposed free energy consists of both the stretching and mixing energy; (ii) the processes of polymer chains detaching from and reattaching on crosslinks are considered in the proposed free energy; (iii) polymer chains have inhomogeneous chain lengths, which are divided into different types. A stabilized semi-implicit difference scheme is used to numerically solve the corresponding Cahn-Hilliard-Cook equation. Numerical results show the process of the phase separation and are consistent with morphology of the nanocomposite hydrogel.
URI: https://hdl.handle.net/10356/146563
ISSN: 2470-0045
DOI: 10.1103/PhysRevE.101.062118
Rights: © 2020 American Physical Society (APS). All rights reserved. This paper was published in Physical Review E and is made available with permission of American Physical Society (APS).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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