scholarly journals Comparison of Various Properties Between Nanoencapsulated Cotton Denimfabricand The Untreated Cotton Denim Fabric

2021 ◽  
pp. 165-170
Author(s):  
V. S. Karpagavalli ◽  
Dr. M. Sumithra
Keyword(s):  
Functional Properties ◽  
Antimicrobial Property ◽  
Fiber Surface ◽  
Nano Particles ◽  
Untreated Cotton ◽  
Denim Fabric ◽  
Antibacterial And Antifungal

Examining electron magnifying instrument investigation was done to quantify the size of Nano cases. The molecule size assumes an essential part in deciding their bond to the texture. It is sensible to expect that the biggest particles will be effectively eliminate from the fiber surface, while the little particles will enter further and follow firmly into texture. The SEM examination of the treated textures showed Nano particles installed on to the textures. The method has been developed to prepare Nano encapsulation finish on100% cotton denim fabrics to impart functional properties. The Nano encapsulated cotton denim fabric is found to have the antimicrobial property even after 30 industrial washes. It likewise plainly exhibited that the treated textures showed expanded antibacterial and antifungal impact in correlation with the untreated texture utilizing utilitarian, physical, mechanical, solace and permeableness tests.

Preparation and Property of Epoxy Based Nano-SiO2/TiO2/Polyimide Hybrid Enhanced Sizing

2011 ◽  
Vol 335-336 ◽  
pp. 96-100
Author(s):  
Cun Zhou ◽  
Jian Li Cheng ◽  
Yu Sun
Keyword(s):  
Carbon Fiber ◽  
Sol Gel ◽  
Fiber Surface ◽  
Nano Particles ◽  
Interface Properties ◽  
Particle Size Analyzer ◽  
Complex Technology ◽  
Carbon Fiber Surface ◽  
Interlaminar Shear ◽  
Micro Morphology

Abstract: An epoxy based nano-SiO2/TiO2/polyimide hybrid enhanced sizing for carbon fiber was prepared by modified SiO2/TiO2precursor in PAA collosol with silane couple agent(WD-50) and eligibility surfactant via sol-gel reaction, and both ultrasonic cavitation and multi-complex technology were used during the process. The properties of PAA-SiO2-TiO2hybrid sizing and micro-morphology of carbon fiber surface were analyzed by FTIR, DSC, Particle Size Analyzer and STM. The results indicated that nanoscale SiO2•TiO2particles dispersed in the hybrid sizing film homogeneously, and a layer with nano particles was formed on carbon fiber surface after treated by the hybrid enhanceing sizing. The roughness was increased and interface properties of carbon fiber would be improved. At the same time both tensile strength and the interlaminar shear strength were increased obviously.

Green Biosynthesis of Iron Oxide Nanoparticles and Testing Their Inhibitory Efficacy Against Some Pathogens

2021 ◽  
Vol 18 (4) ◽  
pp. 119-123
Author(s):  
Doaa Kaduim ◽  
Zaid Mahmoud ◽  
Falah Mousa
Keyword(s):  
Iron Oxide ◽  
Beta Vulgaris ◽  
Inhibition Zone ◽  
Nano Particles ◽  
X Ray Diffraction ◽  
X Ray ◽  
E Coli ◽  
Size Of Particles ◽  
Xrd Patterns ◽  
Antibacterial And Antifungal

The biosynthesis of iron oxide (Fe2O3, also known as haematite) nano particles (NPs) using Hydra helix and Beta vulgaris aqueous extracts were adduced, respectively, where the extracts act as a stabiliser and reductant reagent. The crystal structure and size of particles were investigated using X-ray diffraction (XRD), while the morphology was examined using field emission scanning electron microscopy (FESEM), XRD patterns showed the synthesised nanoparticles with well-crystallised structure from Beta vulgaris extract with size 12 nm, while the results by using Hydra helix showed many peaks back to Goethite phase with 16 nm. The antibacterial and antifungal activity were examined using Staphylococcus (showed inhibition zone diameter 23 mm, 16 mm using Hydra helix and Beta vulgaris, respectively), E. coli (showed no inhibition) and Candida fungi (showed inhibition zone 16 mm, 11 mm using Hydra helix and Beta vulgaris, respectively).

scholarly journals Antibacterial and Antifungal Property of Actinomycetes Isolates from Soil and Water of Nepal

2018 ◽  
Vol 16 (2) ◽  
pp. 136-139 ◽  
Author(s):  
Binod Lekhak ◽  
Anjana Singh ◽  
Dwij Raj Bhatta
Keyword(s):  
Pathogenic Bacteria ◽  
Antimicrobial Property ◽  
Salmonella Typhi ◽  
Multidrug Resistant ◽  
Resistant Bacteria ◽  
Human Pathogens ◽  
Antifungal Property ◽  
Bioactive Metabolite ◽  
Antibacterial And Antifungal ◽  
Soil And Water

Background: Human pathogens are rapidly acquiring resistance to antibiotics leading to treatment failure. We carried out this study to isolate and screen actinomycetes strains that have potential to kill bacterial and fungal pathogens.Methods: In this descriptive study 288 soil and water samples were processed by standard microbiological techniques at Central Department of Microbiology, Tribhuvan University from 2013 to 2015. Screened actinomycetes were cultivated for bioactive metabolite production and minimum inhibitory concentration (MIC) of metabolites were determined against bacterial pathogens including multidrug resistant bacteria and fungi.Results: One hundred twenty isolates having antimicrobial property were screened. Out of them, four most potent strains, Nocardiopsis prasina, Streptomyces violarus, Streptomyces krainskii and Streptomyces tsusimaensis were identified all having both antibacterial and anti-fungal property.Highest zone of inhibition (ZOI)was given by N. prasina against Candida albicans(41.33 ±1.15mm) and among bacteria, maximum ZOI was against Acinetobacter baumannii(31.33±3.05mm). MIC value of metabolite of N.prasina was 0.125mg/ml for E.coli and C. albicans. It was 2.5 mg/ml each for methicillin resistant Staphylococcus aureus (MRSA), A. baumannii and Salmonella Typhi and 0.625 mg/ml for Bacillus Subtilis.Conclusions: Bioactive metabolite producing actinomycetes were recovered from soil and tested against human pathogenic bacteria and fungiand found to have antibacterial and antifungal property.

scholarly journals Modification of Cellulose Products by the Use of Chitosan and Chitosan-Alginate Nano-Particles

2016 ◽  
Vol 16 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Kinga Brzoza-Malczewska ◽  
Magdalena Kucharska ◽  
Marzena Dymel ◽  
Beata Pałys ◽  
Anna Bacciarelli-Ulacha
Keyword(s):  
Antifungal Activity ◽  
Freeze Drying ◽  
Nano Particles ◽  
Fibrous Materials ◽  
Antibacterial And Antifungal Activity ◽  
Physical Chemical ◽  
Antibacterial And Antifungal

Abstract Aim of the presented research was the improvement of fibrous cellulosic products for uses in hygiene and medical sectors. Nano-particles of bioactive polysaccharides were imparted to cellulosic fibrous products to modify their properties: physical–chemical like absorption, biological like antibacterial and antifungal activity, and mechanical. Fibrous materials like dressing gauze, wood-wool, and hygiene tissues were modified by the addition of chitosan and chitosan-alginate nano-particles. Padding and freeze-drying was applied in the coating of the fibrous materials with the nano-sized polymers.

scholarly journals Comparison of functional properties of woven and knitted denim fabrics

2020 ◽  
Vol 71 (01) ◽  
pp. 3-7
Author(s):  
HAFSA JAMSHAID ◽  
ABDUL WAQAR RAJPUT ◽  
BILAL ZAHID ◽  
NORINA ASFAND ◽  
SIKANDER ABBAS BASRA ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Thermal Resistance ◽  
Functional Properties ◽  
Air Permeability ◽  
Denim Fabric

The study was aimed to develop a knitted denim fabric and investigate its properties. The said fabric has similar visualappearance to the woven denim fabric, offering additional stretch properties. The twill effect was produced on circularknitting machine using cross terry structures. Woven denim fabric was also produced to compare its properties withknitted denim. The Physical and comfort properties of these fabrics like air permeability, thermal resistance and moisturemanagement, were investigated. Experimental investigation of serviceability i.e Pilling was also carried out. The purposeof study is to compare both woven and knitted denim fabric properties.

Functional properties of ZnCo2O4 nano-particles obtained by thermal decomposition of a solution of binary metal nitrates

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26843-26849 ◽  
Author(s):  
C. R. Mariappan ◽  
R. Kumar ◽  
G. Vijaya Prakash
Keyword(s):  
Thermal Decomposition ◽  
Functional Properties ◽  
Low Temperatures ◽  
Nano Particles ◽  
Binary Metal ◽  
Synthesis Route ◽  
Metal Nitrates

A simple and inexpensive synthesis route at relatively low temperatures (100 °C) and improved functional properties are reported for ZnCo2O4 nano-particles.

SYNTHESIS AND CHARACTERIZATION OF CHITOSAN NANOPARTICLES WITH ENHANCED ANTIMICROBIAL ACTIVITY

2011 ◽  
Vol 10 (04n05) ◽  
pp. 979-984 ◽  
Author(s):  
SYED WAZED ALI ◽  
MANGALA JOSHI ◽  
SUBBIYAN RAJENDRAN
Keyword(s):  
Antimicrobial Activity ◽  
Particle Size ◽  
Surface Charge ◽  
Antimicrobial Property ◽  
Chitosan Nanoparticles ◽  
Weight Ratio ◽  
Chitosan Solution ◽  
Nano Particles ◽  
Bacterial Suspension ◽  
Bacterial Reduction

The present paper demonstrates how the antimicrobial properties of chitosan can be enhanced by converting it into nanoparticles of desired size and surface charge using TPP (tripolyphosphate) initiated gelation process. It has been investigated and found that ionic gelation of cationic chitosan macromolecules offers a flexible and easily controllable process for systematically and predictably manipulating the particle size and surface charge of chitosan nano-particles which is an important property for antimicrobial effect. Variations in chitosan to TPP weight ratio, pH of chitosan solution and chitosan solution concentration during nanoparticle formation were examined systematically for their effects on nanoparticle size, intensity of surface charge, so as to enable faster synthesis of chitosan nanoparticles with desired properties to have optimum antimicrobial property. The data on particle size and zeta potential was obtained by dynamic light scattering (DLS) and electrophoretic mobility measurement of the chitosan nanoparticles respectively. UV-VIS absorption of bacterial suspension was measured at 610 nm to evaluate the bacterial reduction. Solution pH of chitosan was demonstrated to be the most critical factor in controlling particle size and surface charge. At very strong acidic condition of chitosan solution, cross-linking was less resulting in lower conversion of chitosan to chitosan nanoparticles which was reaffirmed by colloidal titration of the surface groups of the chitosan nanoparticles with negatively charged polyelectrolytes poly(vinyl sulfate kalium salt). It was found that variation in size and surface charge of chitosan nanoparticles could be achieved by changing all the above mentioned process parameters and resulted in significant variation in their antimicrobial activity.

scholarly journals Development of Antimicrobial Cotton Fabric Impregnating AgNPs Utilizing Contemporary Practice

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1413
Author(s):  
Md. Reazuddin Repon ◽  
Tarikul Islam ◽  
Halima Tus Sadia ◽  
Daiva Mikučionienė ◽  
Shakhawat Hossain ◽  
...  
Keyword(s):  
Functional Properties ◽  
Cotton Fabric ◽  
Natural Fiber ◽  
Fiber Surface ◽  
Wash Water ◽  
Direct Dyes ◽  
Light Fastness ◽  
Dyeing Performance ◽  
Wide Range ◽  
Fabric Surface

Multifunctional fabrics using conventional processes have piqued increasing global interest. The focus of this experiment was to assess the modification of the cotton fabric surface by utilizing silver nanoparticles (AgNPs) and introducing functional properties along with sustainable dyeing performance. A single-jersey knitted fabric composed of cellulose-enriched 100% natural fiber (cotton) with an areal density of 172 GSM was used in this study. The standard recipe and test methods were employed. FTIR-ATR spectra were used to determine the fixing of AgNPs onto the fiber surface. A comparative assessment was conducted in response to the distribution of color, color fastness to wash, water, perspiration, rubbing, and light. Scanning electron microscopy (SEM) was used to characterize the surface of nano-Ag-deposited specimens. In terms of functional properties, antimicrobial activity was scrutinized. Our findings reveal that the nanoparticles impart remarkable antibacterial effects to cellulose-enriched fabric against S. aureus (Gram-positive) and E. coli (Gram-negative). Direct dyes were used for dyeing the proposed samples, resulting in enhanced dyeing performance. Except for light fastness, the samples dipped with AgNPs showed outstanding color levelness and color durability characteristics. The developed fabrics can be applied in a wide range of functions, including protective clothing, packaging materials, and healthcare, among others.

scholarly journals New Trends in Fibers Used in Denim Fabric Production

2021 ◽  
Vol 28 (121) ◽  
pp. 48-59
Author(s):  
Nuriye Kertmen
Keyword(s):  
Physical Properties ◽  
Functional Properties ◽  
High Performance ◽  
Antibacterial Property ◽  
Prominent Feature ◽  
Synthetic Fibers ◽  
Cellulosic Fibers ◽  
Denim Fabric ◽  
New Type ◽  
Fabric Production

There is a tendency to use different fibers from cotton to improve the physical properties of conventional denim fabrics, add functional properties, and follow trends and fashion. Warp and weft yarns can be produced with 100% cotton or composed of different fibers optionally for denim fabric. In this study, a piece of detailed information was given about the fibers used for denim fabrics in recent years, and the effects of the fibers were evaluated. In the results of the review, the nature of the fiber and antibacterial property is the most prominent feature nowadays for cellulosic fibers. It is quite advantageous antibacterial fibers also have additional functional properties without further processing. Wool and silk are widely used in conventional textile. They are especially preferred when thermal comfort is required in denim fabric production. Synthetic fibers are indispensable for denim especially when high performance is needed. Also, it is important for the wearer to feel comfortable, so new generations of synthetic fibers that provide high comfort are widely used. Elastane is a characteristic fiber of denim fabric and always a new type of elastane fiber is produced. Besides elastane used in flexible denim fabrics, elastomultiester fibers are popular now. These fibers do not contain elastane but they provide excellent elasticity and recovery for the fabric.

Evaluation of Antibacterial and Anti-Fungal Effect of Zinc Oxide Nano Particles to Complete Denture Tissue Conditioners

2021 ◽  
Author(s):  
Amin Khaleghi ◽  
Parisa Faghani ◽  
Mojtaba Azarian Borujeni
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Zinc Oxide ◽  
Candida Albicans ◽  
Streptococcus Mutans ◽  
Enterococcus Faecalis ◽  
Zno Nanoparticles ◽  
Bacterial Species ◽  
Nano Particles ◽  
Absolute Growth ◽  
Antibacterial And Antifungal

Introduction: The tissue conditioners are used to treat and prepare denture supporting tissue. This study aimedto evaluate the antibacterial and antifungal effect of zinc oxide nanoparticles on total denture tissue conditioners. Materials & Methods: In this laboratory study, 144 samples were collected and evaluated. Synthesized ZnO nanoparticles usingthe optic-optic method and, they were homogeneous with a mass fraction (0.625, 1.25, 2.5, 5, 10, and 20) according to the principles of the MIC method with tissue concentrators. In the present study, four bacterial species (Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans, Enterococcus faecalis), which represent different types of pathogen microorganisms, were used. For measuring the growth rate of microorganisms, a spectrophotometer was used based on turbidity with donereadings at 600 nm. Included tests were ANOVA and Tukey post hoc tests. Considered significant level of 0.05. Results: In the present study, increasing ZnO nanoparticles to tissue concentrators reduced the growth of all microorganisms studied. In the concentration of 20% absolute growth inhibition for Candida albicans, Streptococcus mutans, Enterococcus faecalis and Pseudomonas aeruginosa occurred. The best concentration for Candida, Enterococcus faecalis is in the concentration of 20% ZnO and, for Streptococcus mutans, Pseudomonas aeruginosa at a concentration of 5% ZnO. Conclusion: Increasing the ZnO nanoparticles to improve tissue improves the growth of microorganisms.

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