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Properties of Hydrogel Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Networks".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 2817

Special Issue Editors

Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China
Interests: hydrogel; biomaterials; drug delivery; rheology; texture

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Guest Editor
School of Pharmacy, Weifang Medical University, Weifang 261053, China
Interests: supramolecular gel; protein self-assembly; stimulus-responsive hydrogel; antibacterial peptide; anti-inflammatory; wound dressing
Health Science Center, Shenzhen University, Shenzhen, China
Interests: composite materials; biomaterials; drug delivery; cancer treatment; synergistic therapy
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Special Issue Information

Dear Colleagues,

Initially, hydrogel materials attracted the biomedical scientists’ attention, mainly because of their porosity, high water ratio, and soft consistency, which are very similar to natural living tissues. However, with the expansion of the application field of hydrogel, higher requirements have been put forward for its performance, the research and development of hydrogels composite with better performance has become a area of significant at present. Hydrogel composites have been and are being explored to increase their potential in medicine, biology, agriculture, and food. The performance design plays a key role, including basic physical and chemical properties, mechanical properties, biological properties, and responsive release/degradation properties, etc.

This Special Issue on “Properties of Hydrogel Materials” is dedicated to recent developments from the constructions to applications of hydrogel composites with different properties. This Special Issue covers a variety of hydrogel composite materials, including nanofiber doped gel, polymer doped gel, inorganic particle doped gel, biological material doped gel, etc. Modification methods, structure, performance analysis, and multifunctional applications of hydrogel composites will be discussed.

Dr. Zhiping Fan
Dr. Yuanyuan Gao
Dr. Lianhua Fu
Guest Editors

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Published Papers (1 paper)

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Research

18 pages, 3032 KiB  
Article
Effects of pH and Crosslinking Agent in the Evaluation of Hydrogels as Potential Nitrate-Controlled Release Systems
by María Dolores Ureña-Amate, María del Mar Socias-Viciana, María del Mar Urbano-Juan and María del Carmen García-Alcaraz
Polymers 2023, 15(5), 1246; https://doi.org/10.3390/polym15051246 - 28 Feb 2023
Cited by 1 | Viewed by 2443
Abstract
Water scarcity and the loss of fertilizer from agricultural soils through runoff, which also leads to contamination of other areas, are increasingly common problems in agriculture. To mitigate nitrate water pollution, the technology of controlled release formulations (CRFs) provides a promising alternative for [...] Read more.
Water scarcity and the loss of fertilizer from agricultural soils through runoff, which also leads to contamination of other areas, are increasingly common problems in agriculture. To mitigate nitrate water pollution, the technology of controlled release formulations (CRFs) provides a promising alternative for improving the management of nutrient supply and decreasing environmental pollution while maintaining good quality and high crop yields. This study describes the influence of pH and crosslinking agent, ethylene glycol dimethacrylate (EGDMA) or N,N′-methylenebis (acrylamide) (NMBA), on the behavior of polymeric materials in swelling and nitrate release kinetics. The characterization of hydrogels and CRFs was performed by FTIR, SEM, and swelling properties. Kinetic results were adjusted to Fick, Schott, and a novel equation proposed by the authors. Fixed-bed experiments were carried out by using the NMBA systems, coconut fiber, and commercial KNO3. Results showed that on the one hand, no significant differences were observed in nitrate release kinetics for any system in the selected pH range, this fact allowing to apply these hydrogels to any type of soil. On the other hand, nitrate release from SLC-NMBA was found to be a slower and longer process versus commercial potassium nitrate. These features indicate that the NMBA polymeric system could potentially be applied as a controlled release fertilizer suitable for a wide variety of soil typologies. Full article
(This article belongs to the Special Issue Properties of Hydrogel Materials)
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