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Flexible Conductive Hydrogel

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (15 September 2023) | Viewed by 10813

Special Issue Editor


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Guest Editor
Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, USA
Interests: conductive hydrogels; nanocellulose; wood nanotechnologies; robotic materials; water treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue on Flexible Conductive Hydrogels is devoted to the dissemination of high-quality original research articles or comprehensive reviews on cutting-edge developments in this interdisciplinary field. In recent years, flexible conductive hydrogels have been driven by scientific breakthroughs and offer a wide variety of applications, such as sensors, touch panels, electronic skins, human-machine interaction, biomedicine, robotics, energy storage, etc. Large amounts of conductive hydrogels have been developed for various modern applications, and new advances are being made for energy harvesting, monitoring human motion, treatment of different diseases, artificial soft electronics, etc., thus contributing to human wellbeing. The growing interest in multifunctional conductive hydrogels is mainly because of their simple, yet effective synthetic strategies, and the possibility of achieving competitive advantages for versatile applications. This excitement is certainly fostered through the convergence of physical sciences, chemical sciences, material sciences, medical sciences, and computational sciences, which will bring about profound changes in the way we develop hydrogel-based devices.

An in-depth understanding of the physical, chemical, and/or structural clues is therefore essential for the performance and development of hydrogel-based devices. Both original contributions and comprehensive reviews are welcome.

With a focus on flexible conductive hydrogels, potential topics include but are not limited to the following:

  • Synthesis of flexible conductive hydrogels;
  • Analysis of conductive hydrogels;
  • Physics of conductive hydrogels;
  • Theory and simulation of flexible conductive hydrogels;
  • Conceptual and creative design of conductive hydrogel-based devices;
  • Additive manufacturing of conductive hydrogels;
  • Design of hydrogel-based devices;
  • Processing and performance of conductive hydrogels; 
  • Functional conductive hydrogels;
  • Bio-based conductive hydrogels;
  • Biodegradability of conductive hydrogels.

Dr. Shuaiming He
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • conductive hydrogels
  • robotic materials
  • sensors
  • concept and creative design of hydrogel-based devices
  • additive manufacturing
  • design of hydrogel-based devices
  • functional conductive hydrogels
  • bio-based conductive hydrogels
  • biodegradability
  • hydrogel soft robotics

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Published Papers (3 papers)

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Research

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14 pages, 2350 KiB  
Article
Percutaneous Electroosmosis of Berberine-Loaded Ca2+ Crosslinked Gelatin/Alginate Mixed Hydrogel
by Yinyin Liu, Si Shen, Yifang Wu, Mengmeng Wang, Yongfeng Cheng, Hongmei Xia, Ruoyang Jia, Chang Liu, Yu Wang, Ying Xia, Xiaoman Cheng, Yan Yue and Zili Xie
Polymers 2022, 14(23), 5101; https://doi.org/10.3390/polym14235101 - 24 Nov 2022
Cited by 5 | Viewed by 2230
Abstract
Flexible conductive hydrogel has been driven by scientific breakthroughs and offers a wide variety of applications, including sensors, electronic skins, biomedicine, energy storage, etc. Based on the mixed-ion crosslinking method, gelatin and sodium alginate (Gel–Alg) composite hydrogels were successfully prepared using Ca2+ [...] Read more.
Flexible conductive hydrogel has been driven by scientific breakthroughs and offers a wide variety of applications, including sensors, electronic skins, biomedicine, energy storage, etc. Based on the mixed-ion crosslinking method, gelatin and sodium alginate (Gel–Alg) composite hydrogels were successfully prepared using Ca2+ crosslinking. The migration behavior of berberine hydrochloride (BBH) in the matrix network structure of Gel–Alg hydrogel with a certain pore size under an electric field was studied, and the transdermal effect of berberine hydrochloride under an electric field was also studied. The experimental results show that Gel–Alg has good flexibility and conductivity, and electrical stimulation can enhance the transdermal effect of drugs. Gel–Alg composite hydrogel may be a new material with potential application value in future biomedical directions. Full article
(This article belongs to the Special Issue Flexible Conductive Hydrogel)
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Review

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25 pages, 6566 KiB  
Review
Structural Strategies for Supramolecular Hydrogels and Their Applications
by José Antonio Sánchez-Fernández
Polymers 2023, 15(6), 1365; https://doi.org/10.3390/polym15061365 - 9 Mar 2023
Cited by 12 | Viewed by 3591
Abstract
Supramolecular structures are of great interest due to their applicability in various scientific and industrial fields. The sensible definition of supramolecular molecules is being set by investigators who, because of the different sensitivities of their methods and observational timescales, may have different views [...] Read more.
Supramolecular structures are of great interest due to their applicability in various scientific and industrial fields. The sensible definition of supramolecular molecules is being set by investigators who, because of the different sensitivities of their methods and observational timescales, may have different views on as to what constitutes these supramolecular structures. Furthermore, diverse polymers have been found to offer unique avenues for multifunctional systems with properties in industrial medicine applications. Aspects of this review provide different conceptual strategies to address the molecular design, properties, and potential applications of self-assembly materials and the use of metal coordination as a feasible and useful strategy for constructing complex supramolecular structures. This review also addresses systems that are based on hydrogel chemistry and the enormous opportunities to design specific structures for applications that demand enormous specificity. According to the current research status on supramolecular hydrogels, the central ideas in the present review are classic topics that, however, are and will be of great importance, especially the hydrogels that have substantial potential applications in drug delivery systems, ophthalmic products, adhesive hydrogels, and electrically conductive hydrogels. The potential interest shown in the technology involving supramolecular hydrogels is clear from what we can retrieve from the Web of Science. Full article
(This article belongs to the Special Issue Flexible Conductive Hydrogel)
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19 pages, 7656 KiB  
Review
Conductive Hydrogels Based on Industrial Lignin: Opportunities and Challenges
by Chao Liu, Yu Li, Jingshun Zhuang, Zhouyang Xiang, Weikun Jiang, Shuaiming He and Huining Xiao
Polymers 2022, 14(18), 3739; https://doi.org/10.3390/polym14183739 - 7 Sep 2022
Cited by 30 | Viewed by 3936
Abstract
The development of green materials, especially the preparation of high-performance conductive hydrogels from biodegradable biomass materials, is of great importance and has received worldwide attention. As an aromatic polymer found in many natural biomass resources, lignin has the advantage of being renewable, biodegradable, [...] Read more.
The development of green materials, especially the preparation of high-performance conductive hydrogels from biodegradable biomass materials, is of great importance and has received worldwide attention. As an aromatic polymer found in many natural biomass resources, lignin has the advantage of being renewable, biodegradable, non-toxic, widely available, and inexpensive. The unique physicochemical properties of lignin, such as the presence of hydroxyl, carboxyl, and sulfonate groups, make it promising for use in composite conductive hydrogels. In this review, the source, structure, and reaction characteristics of industrial lignin are provided. Description of the preparation method (physical and chemical strategies) of lignin-based conductive hydrogel is elaborated along with their several important properties, such as electrical conductivity, mechanical properties, and porous structure. Furthermore, we provide insights into the latest research advances in industrial lignin conductive hydrogels, including biosensors, strain sensors, flexible energy storage devices, and other emerging applications. Finally, the prospects and challenges for the development of lignin-conductive hydrogels are presented. Full article
(This article belongs to the Special Issue Flexible Conductive Hydrogel)
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