Volume 21, Issue 24 2502436
Research Article

Restructuring of Hydrogel Polymer Networks via Ion Storming

Weicheng Kong

Weicheng Kong

State Key Laboratory of Fluid Power and Mechatronic Systems & Liangzhu Laboratory, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

The Second Affiliated Hospital of Zhejiang University, Zhejiang University, Hangzhou, 310027 China

Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

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Yuling Lu

Yuling Lu

School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116 China

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Ximin Yuan

Ximin Yuan

State Key Laboratory of Fluid Power and Mechatronic Systems & Liangzhu Laboratory, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

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Yong He

Corresponding Author

Yong He

State Key Laboratory of Fluid Power and Mechatronic Systems & Liangzhu Laboratory, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

The Second Affiliated Hospital of Zhejiang University, Zhejiang University, Hangzhou, 310027 China

Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, College of Mechanical Engineering, Zhejiang University, Hangzhou, 310027 China

Email: [email protected]

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First published: 07 May 2025

Abstract

Hydrogel is a 3D network gel with high hydrophilicity, and its mechanical properties are weakened by the disordered polymer network. Although traditional techniques such as directional freezing and salting-out improve the mechanical properties of the hydrogel, the biomedical and chemical engineering applications are limited by the complex processing procedures. In view of this situation, an urgent demand for the non-intrusive in situ hydrogel processing technique is required, and the disordered polymer network resembles a tangled yarn that can be unraveled through the external electric field. It is of interest to elucidate whether there are countless ions at the atomic-scale that can instantly align the disordered polymer networks in the hydrogel. In this study, it is first demonstrated that these ions can move in the hydrogels under the action of the electric field. The rapid ion vibrations break the hydrogen bonds to restructure the networks under the action of the high-frequency electric field, and the soft hydrogel is formed; while that generates the coordination under the action of the low-frequency field, and the tough hydrogel is obtained. This technique integrates the structure and material in the hydrogels, which enhances the mechanical properties of the 3D-printed hydrogel components.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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