Recent Advances in Crosslinked Gels (2nd Edition)

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

Deadline for manuscript submissions: 20 September 2025 | Viewed by 1209

Special Issue Editor


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Guest Editor
Department of Bioengineering, University of Massachusetts Dartmouth, North Dartmouth, MA 02747, USA
Interests: drug delivery; biomaterials; nanotechnology; chemical analysis; color science; hydrogel

Special Issue Information

Dear Colleagues,

Gels are a type of material that can be made to contain a huge amount of fluid, which can be either gas, as in the case of aerogels, or liquid, as for hydrogels. They typically have a crosslinked 3D network with organic or inorganic backbones. The 3D network is formed via covalent and/or non-covalent bonds. It is important for the gel’s application that the fluid content of such materials is more than 90%. Gels have a variety of applications based on their properties. One specific class of gels that can respond to internal and/or external stimuli, such as temperature, pH, solvent composition, ionic composition, magnetic field, electric field, light, etc., are described as “stimuli-responsive gels” or “smart gels”. This “smart” nature of gels has been explored for many unique applications in different fields, such as substance recovery, drug delivery, tissue engineering, sensors, oil spill cleanups, etc.

This Special Issue serves as a focal point for high-quality research papers as well as review articles addressing crosslinked polymeric gels in addition to their preparation, characterization, and various applications in the fields of chemistry, engineering, and biotechnology.

Prof. Dr. Qinguo Fan
Guest Editor

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Keywords

  • polymeric gels
  • crosslinked gels
  • supramolecular gels
  • synthesis of polymers
  • characterization of gels
  • smart gels
  • stimuli-responsive gels
  • applications
  • drug delivery
  • sensors
  • tissue engineering
  • adsorption

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Published Papers (1 paper)

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Research

14 pages, 3654 KiB  
Article
The Impact of Tween 20 on the Physical Properties and Structure of Agar Gel
by Ewa Jakubczyk, Anna Kamińska-Dwórznicka and Anna Kot
Gels 2025, 11(3), 159; https://doi.org/10.3390/gels11030159 - 23 Feb 2025
Cited by 1 | Viewed by 867
Abstract
This study aimed to evaluate the effect of different concentrations of Tween 20 on various physical properties of agar gel as a model material. The effects of other sources of agar-agar powder on the gel properties were also evaluated. The pure gels were [...] Read more.
This study aimed to evaluate the effect of different concentrations of Tween 20 on various physical properties of agar gel as a model material. The effects of other sources of agar-agar powder on the gel properties were also evaluated. The pure gels were prepared with agar powders obtained from two suppliers. Also, agar gels with Tween 20 in the 0.10 to 0.70% range were produced. The measurement of density, water activity, maximal force at fracture and gelling temperature, and the agar gels’ rheological properties, showed that the gels prepared with different agar powders had similar properties. The syneresis and stability indexes, gas hold-up, mechanical and acoustic attributes, and structure of foamed gels with Tween 20 were measured. The addition of Tween 20 in amounts ranging from 0.10 to 0.35% contributed to a gradual decrease in the stability and mechanical parameters of the gels. Using a concentration of 0.7%, Tween was able to obtain foamed gels with a uniform structure and small pore size, but low hardness and gumminess. Application of a lower concentration of Tween of 0.1% produced more rigid gels with limited gel syneresis. Adding Tween 20 at the appropriate level can be a factor in obtaining gels with a tailored structure and texture. Full article
(This article belongs to the Special Issue Recent Advances in Crosslinked Gels (2nd Edition))
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