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Blend hydrogels composed of carboxymethyl chitosan (CMCh) and poly (acrylonitrile) (PAN) were synthesized via crosslinking method. Several analyses were made to investigate both physical and thermal properties of CMCh/PAN hydrogels like; FTIR, scanning electron microscope, XRD and thermogravimetric analysis (TGA). TGA results showed that CMCh/PAN hydrogels are thermally more stable than CMCh and their...
Nanofibrillated cellulose offers new technological solutions for the development of paper products. Here, composites of nanofibrillated cellulose (NFC) and Ag nanoparticles (NP) were prepared for the first time via the electrostatic assembly of Ag NP (aqueous colloids) onto NFC. Distinct polyelectrolytes have been investigated as macromolecular linkers in order to evaluate their effects on the building-up...
Two different production ways of antibacterial cotton fabrics by means of triclosan inclusion into a β-cyclodextrin cavity have been compared. On the one hand, triclosan has been dissolved into an aqueous solution of a β-cyclodextrin derivative with the aim of including the antibacterial agent into the cavity before grafting the β-cyclodextrin on a cotton fabric. On the other hand, the same β-cyclodextrin...
We have previously reported the preparation of acetyl and benzoyl phenyl-thiosemicarbazone derivatives of chitosan and their antimicrobial activities. The purpose of this study was to further assess the relationship between chemical structure and antimicrobial activity of chloracetyl phenyl-thiosemicarbazone-chitosan. Ten new chloracetyl phenyl-thiosemicarbazone-chitosans were prepared, and their...
In this research, the effect of thymol on the antibacterial activity of cotton fabric when modified by low-temperature plasma was investigated. The modification consisted of plasma pre-functionalization followed by one-step wet treatment with thymol. Oxygen and nitrogen were used as the working gases in the plasma reactor. The results showed that plasma-treated samples can absorb more thymol than...
Antibacterial-modified cellulose fiber was prepared by covalently bonding β-cyclodextrin (β-CD) with cellulose fiber via citric acid (CA) as crosslinking agent, followed by the inclusion of ciprofloxacin hydrochloride (CipHCl) as antibiotic. Effects of reaction time, temperature, concentration of β-cyclodextrin citrate (CA-β-CD) and pH on the grafting reaction were investigated, and the grafting ratio...
Here, a simple and inexpensive in situ synthesis of copper nanoparticles on cotton fabric is carried out by using a chemical reduction method. Copper sulfate as a precursor, citric acid as a stabilizing and protective agent against aggregation and oxidation of nanoparticles, and sodium hypophosphite as a reducing agent were used. The treated cotton fabric was characterized by X-ray diffraction analysis,...
In this study, cotton fabrics were finished with Aloe vera gel along with 1,2,3,4-butanetetracarboxlic acid as a crosslinking agent using the pad-dry-cure method. The finished fabrics were characterized by Fourier transform infrared spectroscopy. The infrared spectra confirmed that the active ingredients of A. vera gel attached to the hydroxyl groups of cotton fabric via a carboxylic acid cross-linking...
The possibility of in situ photoreduction of Ag+-ions using TiO2 nanoparticles deposited on cotton and cotton/PET fabrics in the presence of amino acid alanine and methyl alcohol has been discussed. The possible interaction between TiO2, alanine and Ag+-ions was evaluated by FTIR analysis. The fabrication of TiO2/Ag nanoparticles on both fabrics was confirmed by SEM, EDX, XRD, XPS and AAS analyses...
The recent study focusing on paper coated with microfibrillated cellulose (MFC) revealed the ability of such a structure to achieve a controlled release of molecules introduced into its nanoporous network. The present study examines this concept using a chlorhexidine digluconate-based (CHX) antibacterial solution. Various analyses were performed, optical microscopy, FE-SEM and AFM to underline the...
A facile single-step hydrothermal method was used for the decoration of titania (TiO2) nanoparticles (diameter ca. 40–250 nm) on the surface of cellulose fibers. These cellulose fibers decorated with TiO2 nanoparticles were used to prepare paper matrices by the handsheet-making procedure. The papers showed excellent photocatalytic activity by degrading methyl orange in the presence of UV light and...
Cellulose nanocrystal/zinc oxide (CNC/ZnO) nanohybrids were prepared through citric acid/hydrochloric acid hydrolysis of commercial microcrystalline cellulose (MCC), and simple precipitation with zinc nitrate aqueous solution [Zn(NO3)2·6H2O] via one-pot green synthesis, in which preparation and modification of CNCs were performed simultaneously and the obtained CNCs with carboxyl groups could act...
A copper-based metal–organic frameworks/cellulose fibers (HKUST-1/CF) composite was prepared by in situ and green method. Scanning electron microscopy with energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy and X-ray diffraction analyses revealed the functionalization of cellulose fibers (CFs) was successfully achieved by in situ deposition of HKUST-1 via a DMF-free green...
Membrane fouling is one of the major drawbacks that changes polymeric membrane performance. Biofouling has a series of effects, such as to reduce membrane permeability, to increase energy costs and to decrease membrane lifetime. Cellulose acetate (CA) membranes, containing different amounts of β-cyclodextrin stabilized silver nanoparticles (AgNP-β-CD), were prepared by dispersing the pre-synthesized...
A facile chemical precipitation approach is presented to fabricate flower-like zinc oxide (ZnO) nanorod clusters by using spherical cellulose nanocrystals (SCNs, with cellulose II crystal structure) as growth substrate. Field-emission scanning electron microscopy results showed that nanohybrids (A-100/11) with flower-like ZnO nanorod clusters could be formed under strongly alkaline (pH 11) conditions...
Highly water-soluble cyclosophoraose (Cys) has been recently used as a suitable complexation agent to enhance the solubility of drugs that are hardly water-soluble by molecular encapsulation via host–guest complexation. In this study, a novel Cys/cellulose hydrogel was prepared by cross-linking Cys and cellulose for efficient galangin delivery to improve antibacterial activity. Galangin was known...
A superhydrophobic cotton fabric exhibiting excellent self-cleaning and antibacterial activity prepared by a facile, cost-effective method involving deposition of copper and stearic acid has been reported in this article. The surface morphology and microstructure of the modified fabric have been characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction...
This study discusses the possibility of in situ photoreduction of Ag+-ions on the surface of titania nanotubes (TNTs) deposited on the cotton and cotton/PET fabrics in the presence of amino acid alanine and methyl alcohol. TNTs were synthetized by hydrothermal method. The proposed interaction between titania, alanine and Ag+-ions was based on the results obtained by FTIR measurements. In order to...
This research aimed to optimise the structure of the multifunctional water- and oil-repellent, antibacterial, and flame-retardant hybrid polysilsesquioxane coating to increase its washing fastness to cotton fibres. In the pre-treatment process, pre-prepared Stöber silica particles were applied to the fibres by a pad-dry-cure process followed by the in situ generation of a tetraethyl orthosilicate...
A series of dialdehyde microcrystalline cellulose (DAMC) were prepared by NaIO4 oxidation of microcrystalline cellulose (MCC), and their physico-chemical properties, antioxidant activity, and antibacterial activity were further investigated. The results of scanning electron microscopy indicated that the particle size of DAMC became shorter than that of unoxidized MCC, and the surface erosion of particles...
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