Cu(II)-carboxymethyl chitosan-silane schiff base complex grafted on nano silica: Structural evolution, antibacterial performance and dye degradation ability

Naz, Amreen; Arun, S.; Narvi, Shahid S.; Alam, M. Siraj; Singh, Anu; Bhartiya, Prabha; Dutta, Pradip Kumar

doi:10.1016/j.ijbiomac.2017.11.112

Cited by 65 publications

(20 citation statements)

References 58 publications

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“…The increased intensity at 1406 cm −1 indicated that the deformation vibration of –C–H bonds of CH 3 and CH 2 were more obvious owing to the static electricity or hydrogen bonding interactions. The new emerging characteristic peak at 1328 cm −1 was belonged to –Si–O–C– group, which showed the formation of chemical bonds between the KH550 and CS molecular chains [40]. Furthermore, the weak shoulder peak at 1148 cm −1 belonged to the opponent contraction vibration and the bending vibration peak of Si–O–Si formed from the Si–OH on the KH550 and MAG.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the heat losses would make it difficult to reach the ignition point of the CS and could not support the combustion of the hybrid membranes. Third, adding the silane coupling agent KH550 made the CS molecular chains intercalate more fully and deeply in the CS/KH550/MAG hybrid membrane, which possessed a denser layered structure than the CS/MAG hybrid membrane and further enhanced the fire-retardancy of the hybrid membranes [40].…”

Section: Resultsmentioning

confidence: 99%

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Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite

Wang

et al. 2019

Materials

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Rigid biological systems are increasingly becoming a source of inspiration for the fabrication of the advanced functional materials due to their diverse hierarchical structures and remarkable engineering properties. As a bionic biomaterial with a clear layered structure, excellent mechanical properties, and interesting rainbow colors, nacre has become one of the most attractive models for novel artificial materials design. In this research paper, the tough and strong nacre-like bio-hybrid membranes with an interpenetrating petals structure were fabricated from chitosan (CS) and magadiite (MAG) clay nanosheets through the gel-casting self-assembling method. The analyses from X-ray diffraction (XRD), scanning electron microscope (SEM), and observations of water droplets on membranes indicated that the nacre-like hybrid membranes had a layered compact structure. Fourier transforms infrared spectroscopy (FTIR) analyses suggested that the CS molecular chains formed chemical bonds and hydrogen bonds with MAG layers. The inter-penetrating petal layered structure had a good effect on the mechanical properties of a nacre-like bio-hybrid membranes and the tensile strength of the hybrid membranes could reach at 78.6 MPa. However, the transmission analyses of the results showed that the hybrid membranes still had a certain visible light transmittance. Finally, the hybrid membranes possessed an intriguing efficient fire-shielding property during exposure to the flame of alcohol burner. Consequently, the great biocompatibility and excellent mechanical properties of the bio-hybrid membranes with the special interpenetrating petals structure provides a great opportunity for these composites to be widely applied in biomaterial research.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite

Wang

et al. 2019

Materials

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“…The agar‐well diffusion method was used for the antibacterial activity of films against E. coli according to a previously described study (Naz et al., 2018) with slight modifications. The sterilized nutrient agar media was solidified on an agar plate in a laminar chamber.…”

Section: Methodsmentioning

confidence: 99%

Preparation, and physicochemical and biological evaluation of chitosan‐Arthrospira platensis polysaccharide active films for food packaging

Luo

Feng

et al. 2021

Journal of Food Science

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Active films from chitosan incorporated with Arthrospira platensis polysaccharide (APP) of various ratios (0.0%, 0.5%, and 1.0%, w/v) were developed by solution casting. The effect of APP on the structural, physicochemical, mechanical, antimicrobial, and antioxidant properties of the chitosan‐APP films (CA‐film) was investigated. Fourier transform infrared spectra (FTIR) confirmed successful incorporation of chitosan and APP. The compact structure of the films was observed clearly in scanning electron microscopy (SEM) and atomic force microscopy (AFM) images. X‐ray diffraction (XRD) patterns suggest the semi‐crystalline structure was increased upon addition of APP. The composite films showed an improved water resistance and vapor barrier properties, and reduced by at least 27.4% and 32.1% in swelling degree (Sd) and water vapor permeability (WVP) compared with chitosan film (C‐film), respectively. However, the transparency decreased slightly, which may be due to the shrinkage of the spacing of the polymer interchain. The composite films also displayed enhanced the mechanical properties. The antimicrobial activity of the CA‐film showed an increase of at least of 0.41‐fold in inhibition zone diameter for E. coli. At a concentration of 1.2 mg/mL, the antioxidant activity of CA‐film was enhanced by more than threefold compared with C‐film. Therefore, CA‐films have good potential as sources of active packaging material for the food industry.

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“…The basic requirements to generate such materials for biomedical applications include biocompatibility, biodegradability, mild processing conditions, and the ease for further modification. Chitosan is a cationic polymer of natural origin and has been extensively used as biocompatible scaffold or hydrogel for a wide range of biomedical applications, including tissue engineering [3,4], drug delivery [5][6][7][8], and many others [9][10][11][12]. Chitosan is the deacetylation product of chitin.…”

Section: Introductionmentioning

confidence: 99%

Porous chitosan by crosslinking with tricarboxylic acid and tuneable release

et al. 2020

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Chitosan hydrogels crosslinked with 1,3,5-benzene tricarboxylic acid (BTC) are readily prepared at room temperature by adding aqueous chitosan solution dropwise into BTC-ethanol solution. Highly interconnected porous chitosan materials are subsequently prepared by freeze-drying the chitosan hydrogels. These chitosan materials show porous structures with smaller pores than conventionally prepared chitosan hydrogels via crosslinking with NaOH, genipin or sodium triphosphate. This method of forming chitosan hydrogels with BTC provides the advantage of facile encapsulation of both hydrophobic and hydrophilic compounds, as demonstrated with the model dyes (Oil Red O and Rhodamine B). The release of the hydrophilic dye from the chitosan hydrogels is demonstrated and can be tuned by BTC/chitosan concentrations and the hydrogel drying methods. However, the release of encapsulated hydrophobic dye is negligible.

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Cu(II)-carboxymethyl chitosan-silane schiff base complex grafted on nano silica: Structural evolution, antibacterial performance and dye degradation ability

Cited by 65 publications

References 58 publications

Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite

Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite

Preparation, and physicochemical and biological evaluation of chitosan‐Arthrospira platensis polysaccharide active films for food packaging

Porous chitosan by crosslinking with tricarboxylic acid and tuneable release

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