Preparation and characterization of dual responsive sodium alginate‐<i>g</i>‐poly(vinyl alcohol) hydrogel

Xia, Cunping; Xiao, Congming

doi:10.1002/app.34751

Cited by 20 publications

(5 citation statements)

References 22 publications

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“…However, PVA exhibits some unfavorable mechanical properties (e.g. strength and flexibility), as well as a relatively poor thermal stability [210], though this can be improved by blending PVA with other polymers (including naturally based polymers such as chitosan, gelatin, dextran and hyaluronic acid) [211][212][213] or by adequate chemical or physical cross-linking [61,208]. Chemical cross-linking can be obtained by using glutaraldehyde, genipin, succinyl chloride, adipoyl chloride and sebacoyl chloride, while physical cross-linking can be obtained by repeated freeze-thawing cycles [61,209,214].…”

Section: Dfu Dressings Based On Synthetic Polymersmentioning

confidence: 99%

Recent advances on the development of wound dressings for diabetic foot ulcer treatment—A review

et al. 2013

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a b s t r a c tDiabetic foot ulcers (DFUs) are a chronic, non-healing complication of diabetes that lead to high hospital costs and, in extreme cases, to amputation. Diabetic neuropathy, peripheral vascular disease, abnormal cellular and cytokine/chemokine activity are among the main factors that hinder diabetic wound repair. DFUs represent a current and important challenge in the development of novel and efficient wound dressings. In general, an ideal wound dressing should provide a moist wound environment, offer protection from secondary infections, remove wound exudate and promote tissue regeneration. However, no existing dressing fulfills all the requirements associated with DFU treatment and the choice of the correct dressing depends on the wound type and stage, injury extension, patient condition and the tissues involved. Currently, there are different types of commercially available wound dressings that can be used for DFU treatment which differ on their application modes, materials, shape and on the methods employed for production. Dressing materials can include natural, modified and synthetic polymers, as well as their mixtures or combinations, processed in the form of films, foams, hydrocolloids and hydrogels. Moreover, wound dressings may be employed as medicated systems, through the delivery of healing enhancers and therapeutic substances (drugs, growth factors, peptides, stem cells and/or other bioactive substances). This work reviews the state of the art and the most recent advances in the development of wound dressings for DFU treatment. Special emphasis is given to systems employing new polymeric biomaterials, and to the latest and innovative therapeutic strategies and delivery approaches.

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Section: Dfu Dressings Based On Synthetic Polymersmentioning

confidence: 99%

Recent advances on the development of wound dressings for diabetic foot ulcer treatment—A review

et al. 2013

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“…3d1). Generally, PVA is a brittle biomaterial and hence can be combined with other polymers like sodium alginate to confer high stability and mechanical strength [49]. As reported earlier, PVA-alginate hydrogel is a polymeric material with 3D (three-dimensional) networks that possess good elastic properties and [5,23].…”

Section: Biocorrosion Studiesmentioning

confidence: 93%

Effect of nano-zerovalent iron incorporated polyvinyl-alginate hybrid hydrogel matrix on inhibition of corrosive bacteria in a cooling tower water environment

et al. 2019

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Microbial-induced corrosion (MIC) is an insidious process caused by microbial growth on metals. Among many metals, aluminium, brass, mild steel, stainless steel and carbon steels are more vulnerable to MIC. The present study investigates one of the effective corrosion protection strategies using hybrid hydrogel coating. In this regard, the anti-corrosive activity of n-zerovalent iron (nano-ZVI) incorporated polyvinyl-alginate (PVA) hybrid hydrogel-coated matrix against MIC on aluminium, Al 1100 metal, was tested. The study was conducted against corrosion-inducing bacteria, Terribacillus aidingensis EN3 (Accession number: KR183874), isolated from cooling tower water system. The antibacterial results of nano-ZVI showed a diameter of zone of inhibition at 10 mg/mL. Hybrid hydrogel matrix was employed against the MIC in cooling tower water-containing systems, I, II and III, IV along with a control. The results of the study were supported with weight loss (WL) analysis and electrochemical impedance spectroscopy (EIS) studies. WL results showed a reduced rate of 0.08 mm/y corrosion in hybrid hydrogel system than the other systems. The EIS studies showed higher charge transfer resistance (R ct ) of 14.53 Ω and solution resistance of 3.8 Ω. These results confirmed the presence of nano-ZVI in hybrid hydrogel acted as an antibacterial agent in the PVA-alginate protective film against corrosion in Al 1100. Thus, the obtained results evidenced the novel idea of hydrogel matrix to act as an anti-corrosive film in the cooling tower system.

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“…The optimization of the preparation process by using alginate could effectively solve this problem. Sodium alginate has been widely used in hydrogel preparation 36,37 . The sodium ions on the sodium alginate G unit could occur ion‐exchange reactions with multivalent cations, 38 and the gel microspheres can be fabricated by a simple drip method.…”

Section: Introductionmentioning

confidence: 99%

Construction of double cross‐linked networks in calcium alginate/poly‐N‐isopropylacrylamide hydrogel with photothermal responsiveness for absorbing heavy metal ions

Wang,

Zhao,

Wang

et al. 2023

J of Applied Polymer Sci

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Hydrogels have been widely used for adsorbing heavy metal ions in wastewater treatment. Herein, a calcium alginate/poly‐N‐isopropylacrylamide double‐network hydrogel with photothermal responsiveness was prepared for adsorbing heavy metal ions in aqueous solution. The chemical composition, micromorphology, swelling properties, photothermal responsiveness, adsorption properties, and adsorption mechanism of gel microspheres were studied, respectively. The gel microspheres had an interpenetrating three‐dimensional porous structure, and their high porosity morphology and high specific surface area could ensure the adequate exposure of active adsorption sites. The gel microspheres showed excellent selective adsorption of Cr(III), and the theoretical maximum adsorption capacity of 146.16 mg/g was calculated according to the Langmuir model. Besides, its excellent photothermal conversion ability enhanced the resistance to external interference after the adsorption. Our work has provided an innovative approach to solar water purification while optimizing the preparation process.

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Preparation and characterization of dual responsive sodium alginate‐g‐poly(vinyl alcohol) hydrogel

Cited by 20 publications

References 22 publications

Recent advances on the development of wound dressings for diabetic foot ulcer treatment—A review

Recent advances on the development of wound dressings for diabetic foot ulcer treatment—A review

Effect of nano-zerovalent iron incorporated polyvinyl-alginate hybrid hydrogel matrix on inhibition of corrosive bacteria in a cooling tower water environment

Construction of double cross‐linked networks in calcium alginate/poly‐N‐isopropylacrylamide hydrogel with photothermal responsiveness for absorbing heavy metal ions

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