| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Prof
Graz University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Films based on TEMPO-oxidized chitosan nanoparticles
- 20233D-Printed Anisotropic Nanofiber Composites with Gradual Mechanical Propertiescitations
- 2022Organic acid cross-linked 3D printed cellulose nanocomposite bioscaffolds with controlled porosity, mechanical strength, and biocompatibilitycitations
- 2022Solid Phase Peptide Synthesis on Chitosan Thin Filmscitations
- 2021High oxygen barrier chitosan films neutralized by alkaline nanoparticlescitations
- 2021Design, Characterisation and Applications of Cellulose-Based Thin Films, Nanofibers and 3D Printed Structures
- 2020Design of stable and new polysaccharide nanoparticles composite and their interaction with solid cellulose surfacescitations
- 2019Novel Chitosan–Mg(OH)2-Based Nanocomposite Membranes for Direct Alkaline Ethanol Fuel Cellscitations
- 2019Affinity of Serum Albumin and Fibrinogen to Cellulose, Its Hydrophobic Derivatives and Blendscitations
- 2018Modification of cellulose thin films with lysine moietiescitations
- 2017Interaction of tissue engineering substrates with serum proteins and its influence on human primary endothelial cellscitations
- 2015Cellulose thin films from ionic liquid solutions
- 2014Preparation of PDMS ultrathin films and patterned surface modification with cellulosecitations
- 2014A study on the interaction of cationized chitosan with cellulose surfacescitations
- 2013Functional patterning of biopolymer thin films using enzymes and lithographic methodscitations
- 2013Chemical modification and characterization of poly(ethylene terephthalate) surfaces for collagen immobilizationcitations
- 2012Adsorption of carboxymethyl cellulose on polymer surfacescitations
- 2011Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulosecitations
Places of action
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article
Films based on TEMPO-oxidized chitosan nanoparticles
Abstract
<p>A series of novel films based on TEMPO-oxidized chitosan nanoparticles were prepared by casting method. Fourier transform infrared spectroscopy (FTIR) was employed to ascertain the chemical structure of TEMPO-oxidized chitosan. The surface morphology of the TEMPO-oxidized chitosan nanoparticles was analyzed by atomic force microscopy (AFM). The physicochemical (area density, thickness, iodine sorption, roughness), functional (moisture sorption, liquid absorption capacity, weight loss upon contact with the liquid, and water vapor transmission rate), antibacterial, and antioxidant properties of films based on TEMPO-oxidized chitosan nanoparticles were also investigated. The physicochemical properties of the films varied widely: area density ranged from 77.83 ± 0.06 to184.46 ± 0.05 mg/cm<sup>2</sup>, thickness varied between 80.5 ± 1.6 and 200.5 ± 1.6 μm, iodine sorption spanned from 333.7 ± 2.1 to166.4 ± 2.2 mg I<sub>2</sub>/g, and roughness ranged from 4.1 ± 0.2 to 5.6 ± 0.3 nm. Similarly, the functional properties also varied significantly: moisture sorption ranged from 4.76 ± 0.03 to 9.62 ± 0.11 %, liquid absorption capacity was between 129.04 ± 0.24 and 159.33 ± 0.73 % after 24 h, weight loss upon contact with the liquid varied between 31.06 ± 0.35 and 45.88 ± 0.58 % after 24 h and water vapor transmission rate ranged from 1220.10 ± 2.91to1407.77 ± 5.22 g/m<sup>2</sup> day. Despite the wide variations in physicochemical and functional properties, all films showed maximum bacterial reduction of Staphylococcus aureus and Escherichia coli, although they exhibited low antioxidant activity. The results suggest that the films could be effectively utilized as antibacterial wound dressings.</p>