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Gels
Special Issues
Chitosan-Containing Hydrogels and Their Applications
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Chitosan-Containing Hydrogels and Their Applications

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Applications".

Deadline for manuscript submissions: closed (25 November 2023) | Viewed by 3290

Special Issue Editors

Dr. Anna B. Shipovskaya

E-Mail Website
Guest Editor
Institute of Chemistry, Saratov State University, 410012 Saratov, Russia
Interests: polysaccharides; chitosan; chirality; hydrogels; gelation kinetics; rheology; structure and properties of complex polymeric systems
Dr. Sergei L. Shmakov

E-Mail Website
Guest Editor
Institute of Chemistry, Saratov State University, 410012 Saratov, Russia
Interests: polysaccharides; chitosan; hydrogels; thermodynamics; simulation; structure and properties of complex polymeric systems
Prof. Shulin Yang

E-Mail Website
Guest Editor
School of Environmental and Biological Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
Interests: biomaterials; recombinant collagen; bioengineering; porous scaffolds; electrospinning
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nature cannot be surpassed; one can only improve its gifts. This fully applies to the aminopolysaccharide chitosan, which needs no advertising. Let us note its gel-forming properties, the number of publications devoted to which has been growing exponentially in recent years. The macromolecule containing amino groups protonated in acidic media predetermines the biological activity of chitosan and the use of hydrogels based thereon in many biomedical applications, such as targeted drug delivery, the stabilization/destabilization of pharmaceutical emulsions, regenerative medicine and tissue engineering, including in situ gel-forming structures for intelligent biomaterials, as well as in pharmaceuticals and agriculture. Due to the presence of two monomeric units (namely, D-glucosamine and N-acetyl-D-glucosamine) and a few types of functional groups in the macromolecule, the lability of both the molecular and supramolecular organization of the aminopolysaccharide opens wide opportunities for the covalent or ionic crosslinking of macrochains, the synthesis of graft and block copolymers, and the formation of nanostructured and microstructured structurally anisotropic and biomimetic hydrogel systems. This opens vast possibilities not only for expanding the traditional aspects of the use of chitosan-based hydrogels, but also for obtaining hydrogel systems with novel functional properties, namely: highly efficient sorbents, biosensors for biological labeling and biological imaging, and materials for electrosensitive and electrochemical devices.

This Special Issue of Gels, entitled “Chitosan-Containing Hydrogels and Their Applications”, is dedicated to the latest research in the field of chitosan-based hydrogels: from fundamental aspects to particular applications. It aims to discuss the preparation, kinetics and thermodynamics of gel formation, and the properties of hydrogels and their practical applications. Research and review papers are invited on topics including, but not limited to:

  • Obtaining chitosan-containing hydrogels and their derivatives; the kinetics of gelation.
  • New cross-linking reagents, including biologically active and environmentally friendly ones.
  • Graft and block copolymers of chitosan in the production of hydrogels.
  • Chemical structure; surface morphology; rheological, viscoelastic and other properties.
  • Composite, supramolecular and emulsion hydrogels.
  • Colloidal nanogels and microgels.
  • Thermosensitive hydrogels in situ.
  • Structural anisotropic and biomimetic hydrogels.
  • Practical applications of chitosan-based hydrogels.

Dr. Anna B. Shipovskaya
Dr. Sergei L. Shmakov
Prof. Shulin Yang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Gels is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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

  • chitosan
  • hydrogel
  • preparation
  • properties
  • applications

Published Papers (2 papers)

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Research

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16 pages, 6490 KiB  
Article
Structural and Morphological Features of Anisotropic Chitosan Hydrogels Obtained by Ion-Induced Neutralization in a Triethanolamine Medium
by Sergei L. Shmakov, Tatiana S. Babicheva, Valentina A. Kurochkina, Tatiana N. Lugovitskaya and Anna B. Shipovskaya
Gels 2023, 9(11), 876; https://doi.org/10.3390/gels9110876 - 4 Nov 2023
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Abstract
For the first time, anisotropic hydrogel material with a highly oriented structure was obtained by the chemical reaction of polymer-analogous transformation of chitosan glycolate—chitosan base using triethanolamine (TEA) as a neutralizing reagent. Tangential bands or concentric rings, depending on the reaction conditions, represent [...] Read more.
For the first time, anisotropic hydrogel material with a highly oriented structure was obtained by the chemical reaction of polymer-analogous transformation of chitosan glycolate—chitosan base using triethanolamine (TEA) as a neutralizing reagent. Tangential bands or concentric rings, depending on the reaction conditions, represent the structural anisotropy of the hydrogel. The formation kinetics and the ratio of the positions of these periodic structures are described by the Liesegang regularities. Detailed information about the bands is given (formation time, coordinate, width, height, and formation rate). The supramolecular ordering anisotropy of the resulting material was evaluated both by the number of Liesegang bands (up to 16) and by the average values of the TEA diffusion coefficient ((15–153) × 10−10 and (4–33) × 10−10 m2/s), corresponding to the initial and final phase of the experiment, respectively. The minimum chitosan concentration required to form a spatial gel network and, accordingly, a layered anisotropic structure was estimated as 1.5 g/dL. Morphological features of the structural anisotropic ordering of chitosan Liesegang structures are visualized by scanning electron microscopy. The hemocompatibility of the material obtained was tested, and its high sorption–desorption properties were evaluated using the example of loading–release of cholecalciferol (loading degree ~35–45%, 100% desorption within 25–28 h), which was observed for a hydrophobic substance inside a chitosan-based material for the first time. Full article
(This article belongs to the Special Issue Chitosan-Containing Hydrogels and Their Applications)
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Review

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15 pages, 531 KiB  
Review
Role of Chitosan Hydrogels in Clinical Dentistry
by Suraj Arora, Gotam Das, Mohammed Alqarni, Vishakha Grover, Suheel Manzoor Baba, Priyanka Saluja, Saeed Awod Bin Hassan, Anshad M. Abdulla, Shashit Shetty Bavabeedu, Shahabe Saquib Abullais, Gurparkash Singh Chahal and Anchal Ohri
Gels 2023, 9(9), 698; https://doi.org/10.3390/gels9090698 - 29 Aug 2023
Cited by 4 | Viewed by 1895
Abstract
Biopolymers are organic polymers that can be treated into intricate designs with porous characteristics that mimic essential biologic components. Due to their superior biosafety, biodegradability, biocompatibility, etc., they have been utilized immensely in biomedical engineering, regeneration, and drug delivery. To obtain the greatest [...] Read more.
Biopolymers are organic polymers that can be treated into intricate designs with porous characteristics that mimic essential biologic components. Due to their superior biosafety, biodegradability, biocompatibility, etc., they have been utilized immensely in biomedical engineering, regeneration, and drug delivery. To obtain the greatest number of results, a literature search was undertaken in scientific search engines utilizing keywords. Chitosan is used in a variety of medical sectors, with the goal of emphasizing its applications and benefits in the clinical dental industry. Chitosan can be dissolved in liquid form and combined with other substances to create a variety of products, including fibers, hydrogels, membranes, microspheres, resins, sponges, pastes, tablets, and micro granules. Chitosan has been studied in a variety of dental applications. Chitosan is used in the prevention of caries and wear, in pulpotomy to accelerate osteogenesis in guided tissue regeneration due to its hemostatic property, and primarily to benefit from its antimicrobial activity by adding it to materials, such as glass ionomer cement, calcium hydroxide, and adhesive systems. With its antibacterial activity and biocompatibility, chitosan is leading the pack as a promising ingredient in the production of dental materials. The current review provides an update on the background, fundamentals, and wide range of uses of chitosan and its gels in dental science. Full article
(This article belongs to the Special Issue Chitosan-Containing Hydrogels and Their Applications)
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