State-of-the-Art Gel Research in Romania

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

Deadline for manuscript submissions: 30 April 2026 | Viewed by 415

Special Issue Editor


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Guest Editor
“Ilie Murgulescu” Institute of Physical Chemistry of the Romanian Academy, 060021 Bucharest, Romania
Interests: protein; polysaccharide gels; supramolecular chemistry; mesoporous materials
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Special Issue Information

Dear Colleagues,

This Special Issue “State-of-the-Art Gel Research in Romania” aims to highlight some of the high-quality multidisciplinary research being conducted in Romania in the particular field of soft matter defined by gels. This Special Issue will cover recent advancements in various gels (i.e., physical or chemical), including hydrogels, aerogels, cryogels, metal gels, organogels, ionic gels, and their composites. Potential topics include, but are not limited to, experimental and theoretical studies on design, synthesis, characterization, properties and functions, and mechanistic insights. We also focus on emerging applications in the fields of medicine, pharmaceuticals, bioengineering, food, environment, energy storage, sensing, and electronic device applications, etc.

We cordially invite researchers from Romania to submit original articles or short communications showing their latest results, or reviews on the advancements and challenges in soft matter science.

Dr. Gabriela Ionita
Guest Editor

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.

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Keywords

  • gels
  • hydrogels
  • organogels
  • supramolecular gels
  • macromolecular gels
  • gel-based materials
  • aerogels
  • metallogels
  • gel composites
  • functional gels
  • gel applications

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Published Papers (1 paper)

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Research

15 pages, 2166 KB  
Article
Spectroscopic and Rheological Characterization of Polyvinyl Alcohol/Hyaluronic Acid-Based Systems: Effect of Polymer Ratio and Riboflavin on Hydrogel Properties
by Iulia Matei, Marius Alexandru Mihai, Sorina-Alexandra Leau, Ludmila Aricov, Anca Ruxandra Leonties, Elvira Alexandrescu and Gabriela Ionita
Gels 2025, 11(10), 773; https://doi.org/10.3390/gels11100773 - 25 Sep 2025
Viewed by 325
Abstract
We report a systematic investigation on the physicochemical properties of polymer systems consisting of polyvinyl alcohol (PVA) and hyaluronic acid (HA) mixed in various volume ratios (1/4, 2/3, 1/1, 3/2, and 4/1). At PVA/HA ratios above 1/1, in the presence of glutaraldehyde and [...] Read more.
We report a systematic investigation on the physicochemical properties of polymer systems consisting of polyvinyl alcohol (PVA) and hyaluronic acid (HA) mixed in various volume ratios (1/4, 2/3, 1/1, 3/2, and 4/1). At PVA/HA ratios above 1/1, in the presence of glutaraldehyde and divinyl sulfone as crosslinking agents, hydrogels are formed. Their swelling behavior is dependent on the polymer ratio, with the highest water uptake determined for PVA/HA 4/1. The in situ generation of reactive oxygen species (HO radicals) under UV-A irradiation, in the presence of riboflavin as a photoinitiator, is evidenced by electron paramagnetic resonance (EPR) spectroscopy. The diffusion of small paramagnetic molecules across the interface of two PVA/HA 4/1 gel pieces placed in direct contact reveals the occurrence of molecular exchange, which could indicate some degree of self-repair of the hydrogel network. When the paramagnetic moiety is attached to the HA polymer by spin labeling, the absence of diffusion demonstrates the stability of the crosslinked HA chains within the PVA/HA network. The structural modifications induced by crosslinking, by the presence of riboflavin, and by exposure to UV-A light, and the resulting alterations in the mechanical behavior of the hydrogels are monitored by infrared spectroscopy and rheology. Only a slight decrease in the viscoelastic moduli values is noted, indicating that the formation of HO radicals has minimal impact on the macroscopic properties of the hydrogels. Full article
(This article belongs to the Special Issue State-of-the-Art Gel Research in Romania)
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