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Cooperative dynamics of heuristic swelling and inhibitive micellization in double-network hydrogels by ionic dissociation of polyelectrolyte

Ziyu Xing, Haibao Lu, Mokarram Hossain Orcid Logo, Yong Qing Fu, Jinsong Leng, Shanyi Du

Polymer, Volume: 186, Start page: 122039

Swansea University Author: Mokarram Hossain Orcid Logo

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DOI (Published version): 10.1016/j.polymer.2019.122039

Abstract

In this study, a cooperative model has been proposed for the double network (DN) hydrogel, which synchronously undergoes heuristic swelling and inhibitive micellization by the ionic dissociation of polyelectrolyte. Flory-Huggins solution theory is initially employed to identify the working mechanism...

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Published in: Polymer
ISSN: 0032-3861
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa52910
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Abstract: In this study, a cooperative model has been proposed for the double network (DN) hydrogel, which synchronously undergoes heuristic swelling and inhibitive micellization by the ionic dissociation of polyelectrolyte. Flory-Huggins solution theory is initially employed to identify the working mechanism of dielectric constants on swelling behavior of the DN hydrogel. Then a free-energy function is introduced to formulate the constitutive relationship of the DN hydrogels, in which the first hydrotropic network undergoes a heuristic swelling and the second hydrophobic network undergoes an inhibitive micellization. Finally, the proposed model has been verified using the experimental results reported in the literature. A good agreement between the theoretical results and experimental ones has been achieved. This study provides a fundamental approach to formulate the constitutive relationship and to understand the cooperative dynamics of two types of networks in DN hydrogels induced by the polyelectrolyte.
Keywords: Double network (DN) hydrogels, ionic dissociation, free energy function
College: Faculty of Science and Engineering
Start Page: 122039

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