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Gels
Special Issues
Early Career Award on Gel-Related Science
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Early Career Award on Gel-Related Science

A special issue of Gels (ISSN 2310-2861).

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 17494

Special Issue Editor

Prof. Dr. Xian Jun Loh

grade E-Mail Website
Guest Editor
Institute of Materials Research and Engineering (IMRE), A*STAR, 3 Research Link, Singapore 117602, Singapore
Interests: water soluble polyhydroxyalkanoates; biodegradable thermogelling polymers; supramolecular host–guest polymeric materials for biomedical applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gels are attractive materials for a range of applications. Hydrogels containing water or showing stability under bio-relevant conditions have been utilised for various bio-applications. There has been a rapid growth in gels research such as polymer gels (chemical gels) with bio-orthogonal cross-linking and physical gels containing biomolecules such as short peptides, proteins, (poly)saccharides, and nucleic acids for sustained release

In this special issue, to cover a wide range of research topic concerning such gels, we will open the invitation to early career researchers who are keen to get recognised for their good work in gels.

Dr. Xian Jun Loh
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.

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.

Published Papers (2 papers)

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Research

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10 pages, 2749 KiB  
Article
Graphene Oxide-Chitosan Aerogels: Synthesis, Characterization, and Use as Adsorbent Material for Water Contaminants
by Filippo Pinelli, Tommaso Nespoli and Filippo Rossi
Gels 2021, 7(4), 149; https://doi.org/10.3390/gels7040149 - 24 Sep 2021
Cited by 13 | Viewed by 2577
Abstract
Porous aerogels, formed by subjecting precursor hydrogels using a freeze-drying process, are certainly one of the most studied and synthetized soft materials, thanks to their important features such as elasticity, swelling behavior, softness, and micro and nanosized pores, which guarantee their applicability in [...] Read more.
Porous aerogels, formed by subjecting precursor hydrogels using a freeze-drying process, are certainly one of the most studied and synthetized soft materials, thanks to their important features such as elasticity, swelling behavior, softness, and micro and nanosized pores, which guarantee their applicability in various fields. Typically, these systems are synthetized working with natural or synthetic polymers, but in the last years great interest has been given to proper formulated aerogels able to combine polymeric structures with other moieties such as graphene or graphene oxide. This working strategy can be pivotal in many cases to tune important properties of the final system such as toughness, porosity, elasticity, electrical conductivity, or responsive behavior. In this work we propose the synthesis of chitosan graphene oxide aerogels obtained through self-assembly of graphene oxide sheets and chitosan chains. These three-dimensional systems were chemically characterized with IR and XRD technique and their inner structure was investigated through the scanning electron microscopy (SEM). Moreover, we mechanically characterized the material through dynamic mechanical analysis, showing the stability of these systems. Finally, the adsorption ability of these soft materials has been demonstrated using model molecules to simulate water contaminants showing the efficacy of those graphene-based systems even for the removal of anionic dyes. Complete removal of contaminants was obtained at low concentration of dyes in solution (100 mg/L), while with a higher amount of pollutant in the solution (350 mg/L) high sorption capacity (q > 200 mg/g) was observed. Full article
(This article belongs to the Special Issue Early Career Award on Gel-Related Science)
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Review

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17 pages, 2229 KiB  
Review
Thermo-Responsive Hydrogels: From Recent Progress to Biomedical Applications
by Kaiwen Zhang, Kun Xue and Xian Jun Loh
Gels 2021, 7(3), 77; https://doi.org/10.3390/gels7030077 - 24 Jun 2021
Cited by 98 | Viewed by 14434
Abstract
Thermogels are also known as thermo-sensitive or thermo-responsive hydrogels and can undergo a sol–gel transition as the temperature increases. This thermogelling behavior is the result of combined action from multiscale thermo-responsive mechanisms. From micro to macro, these mechanisms can be attributed to LCST [...] Read more.
Thermogels are also known as thermo-sensitive or thermo-responsive hydrogels and can undergo a sol–gel transition as the temperature increases. This thermogelling behavior is the result of combined action from multiscale thermo-responsive mechanisms. From micro to macro, these mechanisms can be attributed to LCST behavior, micellization, and micelle aggregation of thermogelling polymers. Due to its facile phase conversion properties, thermogels are injectable yet can form an in situ gel in the human body. Thermogels act as a useful platform biomaterial that operates at physiological body temperatures. The purpose of this review is to summarize the recent progress in thermogel research, including investigations on the thermogel gelation mechanism and its applications in drug delivery, 3D cell culture, and tissue engineering. The review also discusses emerging directions in the study of thermogels. Full article
(This article belongs to the Special Issue Early Career Award on Gel-Related Science)
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