Nanocomposite Cellulose Fibres Doped with Graphene Oxide and Their Biocidal Properties

Gabryś, Tobiasz; Fryczkowska, Beata; Machnicka, A.; Graczyk, Tadeusz

doi:10.3390/polym13020204

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…The nano-blade killing mechanism is one of the possible ways for the RCF to project its antibacterial properties. Nevertheless, several other mechanisms may happen in the systems, including causing oxidative pressure and damage to the bacterial cell membrane via the regeneration of ROS [ 42 , 43 ]. A larger inhibition zone for E. coli compared to S. aureus can be related to the thicker peptidoglycan layer in Gram-positive bacteria ( S. aureus ), which protects the bacterial cell from full contact with the RCF [ 3 ].…”

Section: Resultsmentioning

confidence: 99%

Macro-Size Regenerated Cellulose Fibre Embedded with Graphene Oxide with Antibacterial Properties

et al. 2023

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Macro-size regenerated cellulose fibres (RCFs) with embedded graphene oxide (GO) were fabricated by dissolving cellulose in a pre-cooled sodium hydroxide (NaOH)/urea solution and regenerated in sulphuric acid (H2SO4) coagulant. Initially, GO was found to disperse well in the cellulose solution due to intercalation with the cellulose; however, this cellulose–GO intercalation was disturbed during the regeneration process, causing agglomeration of GO in the RCF mixture. Agglomerated GO was confirmed at a higher GO content under a Dino-Lite microscope. The crystallinity index (CrI) and thermal properties of the RCFs increased with increasing GO loadings, up to 2 wt.%, and reduced thereafter. Cellulose–GO intercalation was observed at lower GO concentrations, which enhanced the crystallinity and thermal properties of the RCF–GO composite. It was shown that the GO exhibited antibacterial properties in the RCF–GO composite, with the highest bacterial inhibition against E. coli and S. aureus.

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Section: Resultsmentioning

confidence: 99%

Macro-Size Regenerated Cellulose Fibre Embedded with Graphene Oxide with Antibacterial Properties

et al. 2023

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“…Nanocelluloses are widely applied in nanocomposite formulations and for the development of advanced hybrid materials. Incorporating different materials (e.g., carbon nanomaterials, metal oxides, polymers) into the cellulosic matrix gives rise to unique properties unrealizable by the components alone. , Nanocomposites of nanocelluloses and carbon nanomaterials have been getting attention as a new class of multifunctional hybrid compounds presenting high mechanical strength, electrical and thermal conductivity, and high adsorption capacity. − In this context, graphene oxide (GO), the oxidized and hydrophilic derivative of graphene, is a strategic filler for polymeric composites as it can yield/improve their bioactivity and mechanical/electronic properties. ,− …”

Section: Introductionmentioning

confidence: 99%

Machine Learning of Microscopic Ingredients for Graphene Oxide/Cellulose Interaction

et al. 2022

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Understanding the role of microscopic attributes in nanocomposites allows one to control and, therefore, accelerate experimental system designs. In this work, we extracted the relevant parameters controlling the graphene oxide binding strength to cellulose by combining first-principles calculations and machine learning algorithms. We were able to classify the systems among two classes with higher and lower binding energies, which are well defined based on the isolated graphene oxide features. Using theoretical X-ray photoelectron spectroscopy analysis, we show the extraction of these relevant features. In addition, we demonstrate the possibility of refined control within a machine learning regression between the binding energy values and the system’s characteristics. Our work presents a guiding map to control graphene oxide/cellulose interaction.

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“…In the area of biomedicine, these carbon-based materials have been used for the development of biosensors, in tissue engineering and as delivery carriers for genes or medicines [ 38 ]. To date, none of the GO applications have been approved for clinical trials due to issues related to potential toxicity in model animals, and there are several recent studies in which the in vitro biocompatibility and antimicrobial activity of nanocomposites containing GO have been assessed [ 39 , 40 ]. BC/GO hydrogels have been developed in static and dynamic cultivation to develop systems for the release of medicines such as doxorubicin hydrochloride or ibuprofen, although low release profiles have been obtained [ 30 , 36 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of an Active Dressing by In Situ Biosynthesis of a Bacterial Cellulose–Graphene Oxide Composite

et al. 2022

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This paper presents a simple method of obtaining a bacterial cellulose (BC) composite with the addition of graphene oxide (GO) using an in situ method and studies the influence of GO nanoparticles on the structure and properties of the obtained membranes. Microorganisms obtained from Golden Delicious apple vinegar were used to obtain the BC. During the biosynthesis, GO was introduced in the amounts of 3.7, 5.4 and 7.1% w/w. The resulting BC/GO composite was characterized by high water content (~400%), a thickness of about 1.1 mm (in wet form) and a cellulose nanofiber diameter of ~100 nm. The possibility of using the resulting composite membranes as potential active dressings with the sustained-release analgesic medicine—paracetamol—was investigated. The BC/GO composite membranes were characterized by a medicine sorption of 60 mg/g of BC, a slow desorption time, a constant medicine concentration over time and an 80% paracetamol release rate after 24 h. The morphology of membrane surfaces and cross-sections were examined by means of scanning electron microscopy (SEM). Infrared spectroscopy (FTIR), X-ray structure studies (WAXS) as well as thermal analysis (TGA) demonstrated the presence of GO in the BC matrix and interactions between the matrix and the additive.

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Nanocomposite Cellulose Fibres Doped with Graphene Oxide and Their Biocidal Properties

Cited by 8 publications

References 47 publications

Macro-Size Regenerated Cellulose Fibre Embedded with Graphene Oxide with Antibacterial Properties

Macro-Size Regenerated Cellulose Fibre Embedded with Graphene Oxide with Antibacterial Properties

Machine Learning of Microscopic Ingredients for Graphene Oxide/Cellulose Interaction

Preparation of an Active Dressing by In Situ Biosynthesis of a Bacterial Cellulose–Graphene Oxide Composite

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