n this study, the preparation of inclusion complexes according to kneading and physical mixing techniques at 1:1 and 1:2
(guest:host) mass ratios of Fe
3
O
4
@HA@Ag and β-cyclodextrin were studied. Fourier transformed infrared
spectroscopy, thermogravimetric analyses and scanning electron microscope analysesof the prepared complexes were
carried out. According to the results obtained, it was observed Fe
3
O
4
@HA@Ag especially forms inclusion complex with
β-cyclodextrin at a mass ratio of 1:2. In the second part of this study, results related to the use of these inclusion
complexes during electrospinning process in order to obtain antibacterial nanowebs, which could potentially be used in
medical wounds, will be given.
The study aims to examine the antibacterial efficiency of cotton fabrics loaded with silver cyclo hexane mono or di carboxylates (silver naphthenates). After the synthesis of silver naphthenates, their chemical structures were analysed with spectrophotometric methods (IR and NMR). Then the usage possibility of Ag naphthenates as an antibacterial agent in the finishing of cotton fabrics was investigated. Their antimicrobial activity against three gram-negative (Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa) and three gram-positive (Staphylococcus aureus, Bacillus subtilis, Enterococcus faecalis) bacteria were studied. The stability of the antibacterial effect after repeated washings (1-5-10-20) was also tested.
As an electronic conductive polymer, polypyrrole (PPy), which is a carbonaceous material with high surface area and exceptional electrical and mechanical properties, and is among the advanced electrode materials. PPy / C coated fabrics offer complementary benefits to improve specific capacitance, energy density and stability. In this article, the woolen woven fabric of carbon fibers is coated with a mixture of polyurethane compound and pyrrole monomer as the coating material. In order to examine the microstructure and interfacial properties of the fabric coated with pyrrole, Scanning Electron Microscopy (SEM) imaging is used. For the analysis of the material, showing the changes in energy provided by imaging, chemical bonding of materials, bond vibrations of molecules, material chemical bonds, the bond vibrations of molecules, and analysis of the material by showing the changes in the energy provided by the transitions from the rotational energy levels, Fourier Transform Infrared Analysis (FTIR) is used. The EMSE values for which the electromagnetic properties were measured showed a slight increase in shielding values, compared to the raw carbon fabric.
The aim of this work is to produce tourmaline (TM) doped polyvinylidene fluoride (PVDF) nano-composite fibers. TM-containing PVDF nanofibers were produced via a horizontally located electrospinning unit. N,N-dimethylformamide (DMF) and acetone were used as solvents. The amount of PVDF or PVDF/TM in the polymer solution was 20 wt.%. PVDF was dissolved in DMF in presence of heat by using a magnetic stirrer while TM powder was dispersed in Acetone in absence of heat by using an ultrasonic stirrer. These two solutions were then mixed for TM/PVDF nanocomposite fiber production. Pristine PVDF nanofibers were also electrospun as control samples. Produced nano-surfaces were analyzed under scanning electron microscopy (SEM), Fourier-transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD). Voltage generation capacities were investigated by recording the voltage outputs of samples under an applied rotational impact. The peak voltage produced by the TM doped PVDF nanocomposite fibers was higher than the PVDF nanofibers.
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