Synthesis, characterization and antimicrobial activity of a novel chitosan Schiff bases based on heterocyclic moieties

Hamed, Alaa; Abdelhamid, Ismail A.; Saad, Gamal R.; Elkady, Nadia A.; Elsabeé, Maher Z.

doi:10.1016/j.ijbiomac.2020.02.302

Cited by 91 publications

(52 citation statements)

References 67 publications

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“…Chitosan, a polysaccharide derived from the partial deacetylation of chitin, is a cationic linear biopolymer [8,9]. It has been widely considered as one of the safest biomaterials for various biomedical applications [10][11][12]. Chitosan-based materials have been studied so far as drug delivery systems [13,14], biomedical applications [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…It has been widely considered as one of the safest biomaterials for various biomedical applications [10][11][12]. Chitosan-based materials have been studied so far as drug delivery systems [13,14], biomedical applications [10][11][12]. Chitosan-based materials have been studied so far as drug delivery systems [13,14], and wound dressings [15,16].…”

Section: Introductionmentioning

confidence: 99%

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Crosslinking of Chitosan with Dialdehyde Chitosan as a New Approach for Biomedical Applications

Węgrzynowska-Drzymalska

Grebicka

Mlynarczyk

et al. 2020

Materials

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Materials based on natural high molecular compounds are particularly interesting for biomedical applications. It is known that the cross-linking agent used for preparation of biomacromolecule-based materials is as important as used biopolymer. Therefore, natural cross-linkers containing reactive carbonyl groups are of great interest especially for modifying properties of natural polysaccharides. One of the most popular cross-linking agents is glutaraldehyde. Nevertheless, the unreacted particles can be released from the cross-linked material and cause cytotoxic effects. This can be eliminated when using a cross-linker based e.g., on polysaccharides. This article describes quick and efficient synthesis of dialdehyde chitosan (DACS) and its application for the preparation of chitosan films. Materials obtained with different amount of DACS were fully characterized in terms of structure and surface morphology. Thermal and mechanical properties as well as hydrophilic character were also examined. The results obtained were compared with the materials obtained by cross-linking chitosan with low molecular weight glutaraldehyde and high molecular weight cross-linking agent based on polysaccharide–dialdehyde starch. Toxicity of all obtained materials was tested using the Microtox® test. It has been shown that due to better mechanical, thermal and surface properties as well as lower toxicity, dialdehyde chitosan is a very promising crosslinking agent.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crosslinking of Chitosan with Dialdehyde Chitosan as a New Approach for Biomedical Applications

Węgrzynowska-Drzymalska

Grebicka

Mlynarczyk

et al. 2020

Materials

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“…Good yields were also observed in the case of heterocycles as imidazole or 1H-pyrazole-4-carbaldehydes, an important class of pharmacophores. [40][41][42][43][44] The excellent chemioselectivity of this method was illustrated by its compatibility, whatever the position on the aromatic nucleus, with a boronic acid moiety, a substituent which is becoming common into drug discovery processes 45 and is also a source of diversity given the versatility of this function.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of 5-arylidene rhodanine derivatives using Na2SO3 as an eco-friendly catalyst. Access to 2-mercapto-3-aryl-acrylic acids and a benzoxaborole derivative

Boureghda¹,

Boulcina²,

Dorcet

et al. 2021

Tetrahedron Letters

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“…After reaction with formaldehyde, the band of primary amine (NH 2 ) was obviously weakened, while the new band at 1645 cm −1 appeared that belonged to the stretching vibration of CN bond of Schiff base (Figure 6). 27 …”

Section: Resultsmentioning

confidence: 99%

Modification of the wood‐plastic composite for enhancement of formaldehyde clearance and the 3D printing application

Jiang

Chen³

et al. 2020

J of Applied Polymer Sci

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As the formaldehyde is one of the main indoor pollutants, the purpose of this study is to effectively remove indoor formaldehyde pollution by using environmentally friendly 3D printing ornaments. The wood 3D printing filaments cellulose/polylactic acid composite (Cellu/P) was selected as the starting material, and 3-aminopropyltriethoxysilane (APTES) was used for chemical modification to obtain a series of cellulose composite materials with amino groups. The modified composite materials (APTES@Cellu/P) were characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, thermogravimetric analysis, and mechanical tests, and a formaldehyde removal experiment was performed. The feasibility of 3D printing was evaluated, and the process of 3D printing-functionalized customized ornaments was proposed, and then a school emblem was used for modeling, printing, and surface modification. Compared with the commercially traditional activated carbon, 3D printing-customized ornaments of APTES@Cellu/P material has a better formaldehyde removal effect, and can even avoid the secondary pollution that is common to the activated carbon.

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Synthesis, characterization and antimicrobial activity of a novel chitosan Schiff bases based on heterocyclic moieties

Cited by 91 publications

References 67 publications

Crosslinking of Chitosan with Dialdehyde Chitosan as a New Approach for Biomedical Applications

Crosslinking of Chitosan with Dialdehyde Chitosan as a New Approach for Biomedical Applications

Facile synthesis of 5-arylidene rhodanine derivatives using Na2SO3 as an eco-friendly catalyst. Access to 2-mercapto-3-aryl-acrylic acids and a benzoxaborole derivative

Modification of the wood‐plastic composite for enhancement of formaldehyde clearance and the 3D printing application

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