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Synthesis and Physicomechanical Studies of Nano ZnO Coated Textile fabrics

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... In which formation of hydroxyl radicals is release which act as oxidizing regent for this process. ZnO as semiconductor was applied in AOPs as photo catalyst for removal and decolorization of dyes from polluted water [15]. In this study, the removal and the decolorization of reactive yellow 14 and reactive green dyes in dark and in photoreaction were achieved under using the suspension solution of ZnO. ...
... Furthermore, these photoreactions are less random (negative ΔS # ), non-spontaneous (positive ΔG # 303. 15 ) and fast (have low activation energies). The ΔG # and ΔH # have positive values, that can be interpenetrated as increment in solvated of the transition state between formed hydroxyl radicals and RY 14 dye or RG dye [34,36]. ...
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A copolymers are important compounds today because of their wide applications in various industrial and medical fields and in other fields. Therefore, the study of preparing many of these polymers has been studied. This research involved preparing linear polyester contain Schiff-base unit by interfacial polycondensation three type diacid chloride (Succinoyl Chloride, Adipoyl Chloride and sebacoyl Chloride) in a chloroform /water system employing phase transfer catalyst with monomer containing two hydroxyl which is derived from a 4-hydroxy aniline reacted with a 4-hydroxy benzaldehyde monomer. The monomer (EM1) and polyester (EM2, EM3, and EM4) were characterized by FTIR, 1H NMR, 13C NMR and TGA analysis. The polyester–Schiff base so obtained show good thermal stability.
... In which formation of hydroxyl radicals is release which act as oxidizing regent for this process. ZnO as semiconductor was applied in AOPs as photo catalyst for removal and decolorization of dyes from polluted water [15]. In this study, the removal and the decolorization of reactive yellow 14 and reactive green dyes in dark and in photoreaction were achieved under using the suspension solution of ZnO. ...
... Furthermore, these photoreactions are less random (negative ΔS # ), non-spontaneous (positive ΔG # 303. 15 ) and fast (have low activation energies). The ΔG # and ΔH # have positive values, that can be interpenetrated as increment in solvated of the transition state between formed hydroxyl radicals and RY 14 dye or RG dye [34,36]. ...
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- Several parameters have been studied in this manuscript to investigate the effect of certain parameters on removal of reactive yellow 14 (RY 14) and reactive green (RG) dyes from aqueous solution as a textile dye. Parameters such as temperature, initial concentration of dye and pH were taken in consideration to reach the perfect removal and decolorization for the both dyes. This work was achieved in both dark and photo reaction processes. The results under percent UV-light showed, that the optimal conditions were found at 303.15 K, concentration of reactive green dye 25 ppm and optimum pH= 11.01, while they were appearance for the reactive yellow 14 at 303.15 K, Concentration of reactive yellow dye 50 ppm, and optimum pH= 6.075. The decolorization process for both studied dyes was found to be pseudo first order kinetic, endothermic reaction, non- spontaneous and less random. From the other hand, in dark reaction, the type of adsorption was determined with based on Gibbs free energy values, which were found that the physical adsorption type for the both dyes is predominated, and the reaction is exothermic for dark reaction. The adsorption capacity and percentage of removal elevated with raised dye concentration. The best pH for removal both dyes was conducted and found equal to 5.14 and 9.75 for removal RY 14 and RG dyes respectively. The raised temperature is not enhanced the removal reaction, this result would be due to the dark reaction for both dye is exothermic.
... Recently, there were a vast number of publications directed to the production of low-cost substrates or scaffolds for tissue regeneration [3][4][5]. Among these low-cost alternatives, textile-based materials have been extensively developed in order to offer suitable substrates for biological applications [6][7][8][9][10]. Biomedical textiles have arisen as an optimal basis for orthopedic implants and anchor points for attaching soft tissues to facilitate healing. ...
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Tissue-engineering has become the best alternative solution for replacing the damaged tissues. However, the cost of scaffold materials is still a big challenge, so the development of cost-effective scaffolds is highly encouraged. In this research, different types of cotton textile-scaffolds as a cellulosic material were developed to be utilized as a substrate for cells proliferation. They were loaded with bioactive glass (BG) doped with silver nanoparticles (AgNPs). The effect of the loaded materials on the physicochemical and mechanical characteristics of the cellulosic textile scaffolds was investigated by means of FTIR, contact angle, physical and mechanical properties of the cotton fabrics, in addition to assessing their antimicrobial activity. Moreover, the biomineralization was evaluated after soaking in Simulated Body Fluid (SBF) using ICP and SEM accessorized with EDX. Cells proliferation capacities of the developed cellulosic woven-scaffolds were assessed against MG63 cell line at different incubation times. The physicochemical and mechanical features of these fabrics demonstrated a positive influence for the existence of BG impregnation, especially those doped with AgNPs. The antimicrobial features were also affirmed for the cellulosic scaffolds. More pronounced influence was observed on the biomineralization of the scaffold impregnated with BG doped with 0.5% Ag. The percentages of proliferated cells were very close to negative control (100% ± 10). This approach offers a novel and affordable alternative cellulosic woven-scaffolds for bone regeneration.
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This study primarily aims to explore the strength and thermal properties of various hybrid materials that are made of tetraethoxysilane/vinyltriethoxysilane (TEOS/VTES) and chitosan in different weight ratios. It is confirmed, from micro Fourier transform infrared (micro FT-IR) and nuclear magnetic resonance (NMR) analysis, that hydrogen bonds emerge between chitosan and SiO2 in hybrid materials. With the addition of more VTES and TEOS, the surface of the hybrid material features thick granules. In addition, the mechanical performance and thermostability of both types of hybrid are better than pure chitosan. The former is enhanced with an increasing amount of TEOS until it exceeds 2.4 g and the latter is also improved with an increasing amount of TEOS.
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ZnO nanoparticles were in-situ grown on SiO2 coated cotton fabric through hydrothermal method. A following hot water treatment at 100 °C or higher could transform the morphology of the ZnO nanoparticles on the surface of cotton fabric from sphere and rod to much smaller diameter needle shape through a recrystallization process. After water treatment at 100 °C or higher, the cotton fabric was covered with approximately 24 nm diameter needle-shaped ZnO nanorod and had an excellent UV-blocking property with UV protection factor value over 50. The effects of temperature and time of hot water treatment on the size and crystalline perfection of ZnO nanorod and the UV-blocking property were also studied.
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Sulfated β-cyclodextrin was synthesized from sulfonation of β-cyclodextrin and sulfated polymer was crosslinked with cotton fabric using ethylenediaminetetraacetic acid as crosslinker. ZnO, TiO(2) and Ag nanoparticles were prepared and characterized by XRD, UV, DLS, SEM and PSA. The prepared nanoparticles were coated on crosslinked cotton fabric. The crosslinking and nanoparticles coating effects of cotton fabrics were studied by FTIR and SEM analysis. The antibacterial test was done against gram positive Staphylococcus aureus and gram negative Escherichia coli bacterium.
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The thermal degradation properties of chitosan and lactic and/or glycolic acid grafted chitosan have been studied by differential scanning calorimetry (DSC) and thermogravimetric analyses (TG) in the range of 25–500°C. Both DSC and dynamic TG results show that the samples are thermal degraded easily after grafting the lactic and/or glycolic acid. From the isothermal TG experiments, the initial activation energy and the activation energy at different stages is obtained. The initial activation energy of all grafted samples is much lower than that of chitosan, especially for the sample GA/CS=2 and it varies with degree of conversion. The FT–IR spectra of thermally degraded residues give an indication of the chitosan polyscaccharide ring degradation after 30 min in 280°C, while sample GA/CS=2 will degrade only after 15 min.
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The thermal degradation of chitin and chitosan have been studied by using simultaneous TG and DSC in nitrogen atmosphere. The model-free iso-conversional method has been employed to evaluate the activation energies as a function of the extent of degradation. The obtained dependencies are interpreted in terms of degradation mechanisms. Under nitrogen, the thermal degradation of chitin and chitosan follows a random scission pathway, which is initiated at weak links. The activation energies of thermal degradation of chitin are constant and this process follows 1.23 order reaction. As for chitosan, the activation energies of thermal decomposition are obviously dependent on the extent of conversion. The pyrolysis reaction of chitosan is analysed by using a distributed activation energy model (DAEM) because the residual N-acetylated side-chains are randomly distributed on the chitosan main chains. Also, the parameters of the DAEM are evaluated.
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In this paper, the preparation, characterization and dye adsorption properties of novel biocompatible composite (Chitosan-zinc oxide nanoparticle) (CS/n-ZnO) were investigated. Zinc oxide nanoparticles were immobilized onto Chitosan. Physical characteristics of CS/n-ZnO were studied using Fourier transform infra-red (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and wavelength dispersive X-ray spectroscopy (WDX). Two textile dyes, Direct Blue 78 (DB78) and Acid Black 26 (AB26), were used as model compounds. The effect of CS/n-ZnO doses, initial dye concentration, salt and pH were elucidated at 20+/-1 degrees C. The isotherm and kinetics of dye adsorption were studied. The presence of functional groups such as hydroxyl, amino and carbonyl groups were detected. Results showed zinc oxide nanoparticles were immobilized onto Chitosan. The data were evaluated for compliance with the Langmuir, Freundlich and Tempkin isotherm models. It was found that AB26 and DB78 followed with Langmuir and Tempkin isotherms, respectively. In addition, adsorption kinetics of both dyes was found to conform to pseudo-second order kinetics. Based on the data of present investigation, one could conclude that the CS/n-ZnO being a biocompatible, eco-friendly and low-cost adsorbent might be a suitable alternative for elimination of dyes from colored aqueous solutions.
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In this study, cotton fabric was successfully modified by titania nanosols prepared by means of the sol-gel process with tetrabutyl orthotitanate [Ti(OC(4)H(9))(4)] as the active ingredient. The cotton fabric was padded with the nanosol solution, dried at 60 degrees C, and cured at 150 degrees C. Scanning electron microscopy showed the presence of a titania film on the fiber surface. The photocatalytic properties of titania-nanosol-treated cotton fabric were investigated. The results showed that stains of coffee and red wine were successfully decomposed by exposure of the stained fabric to UV radiation. Furthermore, titania-nanosol treatment imparted to the cotton fabric a very good protection against UV radiation. The durability of the treatment was investigated by performing repeated home laundering, and the results showed no effect of laundering on the UV-protection efficiency.
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Zinc oxide (ZnO) nanoparticles were synthesized and deposited on the surface of cotton fabrics using ultrasound irradiation. Optimization of the process resulted in a homogeneous distribution of ZnO nanocrystals, 30 nm in size, on the fabric surface. The mechanism of the ultrasound-assisted coating was proposed. The antibacterial activities of the ZnO-fabric composite were tested against Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) cultures. A significant bactericidal effect, even in a 0.75% coated fabric (wt %), was demonstrated.
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To investigate antibacterial activities of zinc oxide nanoparticles (ZnO NP) and their mode of action against an important foodborne pathogen, Escherichia coli O157:H7. ZnO NP with sizes of 70 nm and concentrations of 0, 3, 6 and 12 mmol l(-1) and NP-free solutions were used in antimicrobial tests against E. coli O157:H7. ZnO NP showed increasing inhibitory effects on the growth of E. coli O157:H7 as the concentrations of ZnO NP increased. A complete inhibition of microbial growth was achieved at the concentration level of 12 mmol l(-1) or higher. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy were used to characterize the changes of morphology and cellular compositions of bacterial cells treated with ZnO NP and study the mode of action of ZnO NP against E. coli O157:H7. The intensity of lipid and protein bands in the Raman spectra of bacterial cells increased after exposure to ZnO NP, while no significant changes in nucleic acid bands were observed. ZnO NP were found to have antibacterial activity against E. coli O157:H7. The inhibitory effects increase as the concentration of ZnO NP increased. Results indicate that ZnO NP may distort and damage bacterial cell membrane, resulting in a leakage of intracellular contents and eventually the death of bacterial cells. These results suggest that ZnO NP could potentially be used as an effective antibacterial agent to protect agricultural and food safety.
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In this study, ZnO nanowire arrays with different orientations were prepared. Confocal laser scanning microscopy (CLSM) and field-emission scanning electron microscope (FE-SEM) technique were employed for understanding the disparities in antibacterial activity between different orientations of ZnO nanoarrays. The effects of the different planes of ZnO nanowire were also discussed for the first time.
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Nanoparticle metal oxides represent a new class of important materials that are increasingly being developed for use in research and health-related applications. Highly ionic metal oxides are interesting not only for their wide variety of physical and chemical properties but also for their antibacterial activity. Although the in vitro antibacterial activity and efficacy of regular zinc oxides have been investigated, little is known about the antibacterial activity of nanoparticles of ZnO. Preliminary growth analysis data suggest that nanoparticles of ZnO have significantly higher antibacterial effects on Staphylococcus aureus than do five other metal oxide nanoparticles. In addition, studies have clearly demonstrated that ZnO nanoparticles have a wide range of antibacterial effects on a number of other microorganisms. The antibacterial activity of ZnO may be dependent on the size and the presence of normal visible light. The data suggest that ZnO nanoparticles have a potential application as a bacteriostatic agent in visible light and may have future applications in the development of derivative agents to control the spread and infection of a variety of bacterial strains.
Enhancing of Cotton Fabric Antibacterial Properties by Silver Nanoparticles Synthesized by New Egyptian Strain Fusarium Keratoplasticum A1-3
  • A A Mohmed
  • A Fouda
  • M S Elgamal
Mohmed, A.A., Fouda, A., Elgamal M.S. et al, Enhancing of Cotton Fabric Antibacterial Properties by Silver Nanoparticles Synthesized by New Egyptian Strain Fusarium Keratoplasticum A1-3, Egypt. J. Chem. The 8th. Int. Conf. Text. Res. Div., Nat. Res. Centre, Cairo (2017), 63 -71.
Enhanced bioactivity of ZnO nanoparticlesan antimicrobial study
  • N Padmavathy
  • R Vijayaraghavan
Padmavathy, N., and Vijayaraghavan, R., Enhanced bioactivity of ZnO nanoparticlesan antimicrobial study. Sci Technol Adv Mater 2008; 9: 035004.
Evaluation the Using of Nano Materials as Self Cleaning Agents of Different Kinds of Stained Archeological Textiles
  • E Osman
  • S F Ibrahim
  • E Dalia
Osman, E., Ibrahim S. F., Dalia, E., Evaluation the Using of Nano Materials as Self Cleaning Agents of Different Kinds of Stained Archeological Textiles, Egypt. J. Chem,. 2017; 60(5): 945-956.