Smart Polymer Hydrogels: Synthesis, Properties and Applications (2nd Edition)

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

Deadline for manuscript submissions: 30 May 2024 | Viewed by 1381

Special Issue Editor

College of Bioengineering, Chongqing University, Chongqing 400044, China
Interests: supramolecular hydrogels; biomaterials; peptide self-assembly; peptide crystallization; structure–property relationship; biomedical materials; optoelectronic devices
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Special Issue Information

Dear Colleagues,

This Special Issue aims to provide a comprehensive collection of works on recent advances and developments in smart polymer hydrogels applied to the biomedical and nanotechnological fields. The research topic covers all hydrogels, including polymer hydrogels, supramolecular gels, hybrid hydrogels, metallohydrogels, etc.

Stimulus-responsive polymer hydrogels have attracted considerable interest as promising smart materials due to their tremendous potential in biomedical and nanotechnological applications. They can respond to different chemical and physical external stimuli, including pH, temperature, light, enzyme activity, redox agents, the electric or magnetic field, and chemicals. Compared to single stimulus-responsive polymer hydrogels, multiple-responsive hydrogels exhibit higher flexibility and tunability to realize multiple functionality in a synergistic manner. The structural and phase transition of polymer hydrogels triggered by external stimuli offers enormous potential for drug delivery, tumor therapy, tissue engineering, and biodevices. Thus, in this Special Issue, we invite researchers working in hydrogel-related fields to contribute their current new work to this Special Issue on smart polymer hydrogels.

Prof. Dr. Wei Ji
Guest Editor

Manuscript Submission Information

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Keywords

  • polymer hydrogels
  • supramolecular hydrogels
  • hydrogel preparation
  • stimuli-responsive
  • mechanical properties
  • drug delivery
  • tumor treatment
  • tissue engineering
  • biomedical applications
  • optoelectronic devices
  • nanotechnological applications

Published Papers (1 paper)

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Research

19 pages, 3040 KiB  
Article
Removal of Malachite Green by Poly(acrylamide-co-acrylic acid) Hydrogels: Analysis of Coulombic and Hydrogen Bond Donor–Acceptor Interactions
by Salah Hamri, Bouchra Bouzi, Djahida Lerari, Fayçal Dergal, Tewfik Bouchaour, Khaldoun Bachari, Zohra Bouberka and Ulrich Maschke
Gels 2023, 9(12), 946; https://doi.org/10.3390/gels9120946 - 01 Dec 2023
Viewed by 959
Abstract
Water pollution caused by dyes poses a significant threat to life on earth. Poly(acrylamide-co-acrylic acid) hydrogels are widely used to treat wastewater from various pollutants. This study aims to examine the removal of malachite green (MG), a harmful and persistent dye that could [...] Read more.
Water pollution caused by dyes poses a significant threat to life on earth. Poly(acrylamide-co-acrylic acid) hydrogels are widely used to treat wastewater from various pollutants. This study aims to examine the removal of malachite green (MG), a harmful and persistent dye that could cause extensive environmental damage, from an aqueous solution by adjusting the initial concentration of acrylamide (AM) and the degree of copolymer crosslinking. The copolymer hydrogels efficiently eliminate MG in a brief timeframe. The most successful hydrogel accomplished a removal rate exceeding 96%. The copolymer of 4 wt % 1,6-hexanediol diacrylate and a concentration of 100 mg/mL AM was effective. The degree of swelling was affected by crosslinking density as expected, with low crosslinking ratios resulting in significant swelling and high ratios resulting in less swelling. To evaluate the results, a docking approach was used which presented three crosslinked models: low, medium, and high. The copolymer–dye hydrogel system displayed robust hydrogen bonding interactions, as confirmed by the high quantities of both donors and acceptors. It was determined that MG contains six rotatable bonds, enabling it to adapt and interact with the copolymer chains. The dye and copolymer enhance H-bond formation by providing two hydrogen bond donors and 16 hydrogen bond acceptors, respectively. Through capitalizing on cationic and anionic effects, the ionic MG/copolymer hydrogel system improves retention efficiency by enhancing attraction between opposing charges. It is interesting to note that the synthesized copolymer is able to remove 96.4% of MG from aqueous media within one hour of contact time. Full article
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