scholarly journals DEVELOPMENT OF MULTIFUNCTIONAL YARN FROM THE FUNCTIONALIZATION OF ORGANIC RAW COTTON FIBERS WITH ZINC NANOPARTICLES

2021 ◽  
Vol 2021 ◽  
pp. 35-44
Author(s):  
S. Ferreira ◽  
P. Silva ◽  
J. Bessa ◽  
F. Cunha ◽  
C. Castro ◽  
...  
Keyword(s):  
Chemical Nature ◽  
Antibacterial Properties ◽  
Aqueous Dispersion ◽  
Cotton Fibers ◽  
Zinc Nanoparticles ◽  
Textile Materials ◽  
Moisture Management ◽  
Contagious Diseases ◽  
The One ◽  
Single Jersey

The emergence of increasingly contagious diseases in these days, such as COVID-19, increased the need to develop more effective personal protection equipment’s (PPEs). Therefore, the goal is to create textile materials capable to act against bacteria, virus or fungi, with a long-lasting performance but, at the same time, that could be comfortable and safe for their users. In this sense, based on the advantages of nanotechnology, the aim of this work was to functionalize organic raw cotton fibers with zinc nanoparticles (NPs) and previously tretated with NaOH, for the further production of multifunctional yarns with antimicrobial activity. Thereby, the fibers functionalization was tested using 1% w/w and 2% w/w of zinc NPs aqueous dispersion, being subsequently evaluated their distribution, chemical nature and zinc concentration by SEM/EDS and Atomic Absorption Spectroscopy, respectively. Subsequently, using the functionalized fibers, a yarn was spinned and their structural, mechanical and moisture management properties determined. Also, to assess the influence of the produced yarn on the properties of a fibrous structure, a single jersey knit sample was further produced and evaluated regarding their mechanical, moisture management and antibacterial properties. Based on the methodology used it was possible to develop a yarn with a tenacity 24% higher and a knit sample 28% more breathable and with a water evaporating ratio 37% higher than the one without any treatment or functionalization, but mainly with a strong antibacterial activity against both gram-negative (Klebsiella Pneumoniae) and gram-positive (Staphylococcus Aureus) bacteria, presenting therefore potential to be used in the production of effective PPEs.

scholarly journals A New Supported Manganese-Based Coordination Complex as a Nano-Catalyst for the Synthesis of Indazolophthalazinetriones and Investigation of Its Antibacterial Activity

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 783-799
Author(s):  
Maryam Ariannezhad ◽  
Davood Habibi ◽  
Somayyeh Heydari ◽  
Vahideh Khorramabadi
Keyword(s):  
Antibacterial Activity ◽  
Simple Procedure ◽  
Condensation Reaction ◽  
Antibacterial Properties ◽  
Coordination Complex ◽  
Bacterial Strains ◽  
One Pot ◽  
Nano Catalyst ◽  
Ft Ir ◽  
The One

A new magnetic supported manganese-based coordination complex (Fe3O4@SiO2@CPTMS@MBOL@ Mn) was prepared in consecutive stages and characterized via various techniques (VSM, SEM, TEM, XRD, FT-IR, EDX, TG-DTA, and ICP). To evaluate its application, it was used for synthesis of divers Indazolophthalazinetriones in a simple procedure via the one-pot three-component condensation reaction of aldehydes, dimedone, and phthalhydrazide in ethanol under reflux conditions. The Mn catalyst can be recycled without any noticeable loss in catalytic activity. Additionally, the antibacterial properties of the nano-catalyst were studied against some bacterial strains.

Preparation, characterization, antibacterial properties and hydrophobic evaluation of SiO2/Ag nanosol coated cotton/linen fabric

2020 ◽  
Vol 111 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Hongbin Li ◽  
Yan Zhuang ◽  
Hao Li ◽  
Karen Chávez Bracamontes ◽  
Dawei Wang ◽  
...  
Keyword(s):  
Zeta Potential ◽  
Sol Gel ◽  
Antibacterial Properties ◽  
Air Permeability ◽  
Hydrophobic Property ◽  
Textile Materials ◽  
Antibacterial Performance ◽  
Ag Particles ◽  
Linen Fabric ◽  
Coated Cotton

Surface modification is an important element of textile manufacturing. The SiO2/Ag sol–gel was coated on the cotton/linen fabric by a simple two-dipping-two-rolling coating machine. SEM, Zeta-potential, (ATR)-FTIR and XRD, physical properties, water-droplet adsorption, antibacterial performance and water-resisting property have been adopted as the characterization techniques. The Zeta-potential showed that the nano-Ag particles affected the size of SiO2 nanoparticles. The results showed that antibacterial activity and hydrophobic property of cotton/linen fabric increased with the increasing concentration of the AgNO3. Air permeability was not decreased considerably, whereas tensile strength was increased significantly after coating twice. The SiO2/Ag coating cotton/linen fabric had an excellent antibacterial performance. Our results demonstrate that this SiO2/Ag coated cotton/linen fabric is a step towards better hydrophobic performance of textile materials.

scholarly journals Characterization of functional single jersey knitted fabrics using non-conventional yarns for sportswear

2016 ◽  
Vol 88 (3) ◽  
pp. 275-292 ◽  
Author(s):  
Jefferson M Souza ◽  
Sandra Sampaio ◽  
Welter C Silva ◽  
Sidney G de Lima ◽  
Andrea Zille ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Water Vapor Permeability ◽  
Thermal Control ◽  
Vapor Permeability ◽  
Knitted Fabrics ◽  
Moisture Management ◽  
Antimicrobial Efficiency ◽  
Technical Textiles ◽  
Single Jersey

Eight functional single jersey plain knitted fabrics have been developed in order to assess a quantitative analysis of various comfort-related properties in terms of thermal control, air and water vapor permeability, wickability, coefficient of kinetic friction and antimicrobial efficiency, using eight different commercially available functional yarns: Polyester Craque® and viscose Craque® conventional yarns as controls; Finecool® and Coolmax® polyester yarns for moisture management and quick drying; Holofiber® polyester yarns containing an optical responsive material that the producer claims to improve body oxygenation; Airclo® polyester hollow yarns for efficient control of body temperature; and, finally, polyester Trevira® and viscose Seacell® for antimicrobial activity. According to the results, Coolmax® for moisture management, Airclo® for thermal control and Seacell® for antimicrobial activity present the best performances as technical textiles for sportswear for the respective specific functional property.

Silvering of inert polyethylene terephthalate textile materials: The factors of adjustment on silver release, part II

2011 ◽  
Vol 81 (18) ◽  
pp. 1940-1948 ◽  
Author(s):  
Toty Onggar ◽  
Tong Cheng ◽  
Heike Hund ◽  
Rolf-Dieter Hund ◽  
Chokri Cherif
Keyword(s):  
Drinking Water ◽  
Polyethylene Terephthalate ◽  
Silver Layer ◽  
Fixation Time ◽  
Silver Particles ◽  
Constant Heat ◽  
Textile Materials ◽  
Silver Release ◽  
The One ◽  
Atom Absorption

The aim of this research is to develop a textile product to prevent and eliminate biological contaminations in drinking water and other liquid-leading systems. Herein, the adjustment of the silver release from silvered textile materials with the retention of the antibactericidal qualities has been studied. The limited values for silver in drinking water in Germany (100 µg/l) must be considered as well. Moreover, the factors of the adjustment of the silver release, such as the concentration of the silver on the one hand and the reduction agent, the silvering process, the thermal fixation time and temperature, the size of the silver particles, and the thickness of the silver layer on the surface of textile materials for the silvering on the other hand have been systematically examined by using polyethylene terephthalate (PET) materials as a basis. Silver concentration in the elution has been detected by means of atom absorption spectroscopy (ZEEnit 700, Analytics Jena, Germany). The amount of silver taken up by PET was weighed after was under a constant heat of 900°C for 4 h.

scholarly journals Synthesis and Characterization of Nonwoven Cotton-Reinforced Cellulose Hydrogel for Wound Dressings

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4098
Author(s):  
Faheem Ahmad ◽  
Bushra Mushtaq ◽  
Faaz Ahmed Butt ◽  
Muhammad Sohail Zafar ◽  
Sheraz Ahmad ◽  
...  
Keyword(s):  
Sol Gel ◽  
Antibacterial Properties ◽  
Wound Dressings ◽  
Original Form ◽  
Wound Exudate ◽  
Moisture Management ◽  
Cellulose Hydrogel ◽  
Gel Technique ◽  
The Fourier Transform

Hydrogels wound dressings have enormous advantages due to their ability to absorb high wound exudate, capacity to load drugs, and provide quick pain relief. The use of hydrogels as wound dressings in their original form is a considerable challenge, as these are difficult to apply on wounds without support. Therefore, the incorporation of polymeric hydrogels with a certain substrate is an emerging field of interest. The present study fabricated cellulose hydrogel using the sol–gel technique and reinforced it with nonwoven cotton for sustainable wound dressing application. The nonwoven cotton was immersed inside the prepared solution of cellulose and heated at 50 °C for 2 h to form cellulose hydrogel–nonwoven cotton composites and characterized for a range of properties. In addition, the prepared hydrogel composite was also loaded with titania particles to attain antibacterial properties. The Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the formation of cellulose hydrogel layers inside the nonwoven cotton structure. The fabricated composite hydrogels showed good moisture management and air permeability, which are essential for comfortable wound healing. The wound exudate testing revealed that the fluid absorptive capacity of cellulose hydrogel nonwoven cotton composite was improved significantly in comparison to pure nonwoven cotton. The results reveal the successful hydrogel formation, having excellent absorbing, antimicrobial, and sustainable properties.

scholarly journals Chemical Indices and Antibacterial Properties of Some Essential Oils of Apiaceae and Lauraceae Spices in Southwest of Algeria

2019 ◽  
Author(s):  
Dalila Razni ◽  
Linda Rouisset ◽  
Elhassan Benyagoub
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Enterococcus Faecalis ◽  
Antibacterial Properties ◽  
Independent Effect ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Cinnamon Essential Oil ◽  
The One

This study is a part of the valorization of extract from three most commonly used Algerian spices, namely; caraway and cumin seeds and cinnamon bark. On the one hand, it aims at characterizing the chemical indices of extracted essential oils and evaluating the antibacterial activity of each essential oil by titration and disc diffusion method respectively. On the other hand, it attempts at evaluating the combined action of essential oils against four reference pathogenic bacterial strains, namely Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Enterococcus faecalis by well and Chabbert-type diffusion method. The essential oils obtained by the hydrodistillation method have a relatively average extraction about 1.43, 2.3 and 2.5%, respectively for caraway, cumin, and cinnamon. The acid index indicates the behavior and amount of free acids present in the essential oil, in which the acid and saponification indices of cinnamon essential oil indicate a value of 4.48 and 168.56 respectively. It can also inform us about the susceptibility of the oil to undergo alterations. The antibacterial activity results showed that cinnamon essential oil (EO) proved to be the most active against the tested bacterial strains; caraway EO was active against Enterococcus faecalis, and the antibacterial action of cumin EO was the lowest. However, the association of the extracted essential oils has a higher synergistic effect than the independent effect of each essential oil, in which the MIC value found was estimated at 10 to 20 (V/V), 40 to 50 (V/V) and 50 to 70 (V/V) respectively for cinnamon, cumin and caraway. The obtained results show that the response to the antibacterial activity varies according to the plant species used and the extract tested alone or in combination.

scholarly journals Porosity of Knitted Fabrics in the Aspect of Air Permeability - Discussion of Selected Assumptions

2017 ◽  
Vol 25 (0) ◽  
pp. 86-91 ◽  
Author(s):  
Marie Havlová ◽  
Jana Špánková
Keyword(s):  
Theoretical Calculations ◽  
Correlation Coefficients ◽  
Air Permeability ◽  
Knitted Fabrics ◽  
Textile Materials ◽  
Yarn Hairiness ◽  
The Relationship ◽  
Very High ◽  
Single Jersey

The main focus of this paper is to look into the relationship between the structure and air permeability of single jersey knitted fabric – especially verifying some basic assumptions. First, if it is possible to neglect the permeability of yarns themselves when we evaluate that of knits, and second, if yarn hairiness plays a significant role when we evaluate the relationship between air permeability and the porosity of knits. Theoretical calculations and experiments which were performed using an analysis of microscopic images of the structure of textile materials are used for the determination of inter-yarn and intra-yarn porosity. The paper aims to show t hat the characteristic dimension of inter-yarn pores is significantly higher than that of intra-yarn pores, and also that the values of inter-yarn porosity measured using image analysis methods with hairiness and after the removal of hairiness are statistically significantly different. The correlation coefficients for the porosity values measured and calculated are very high.

The Antiviral and Antibacterial properties of Plectranthus amboinicus and Piper longum with the Addition to Focaccia Bread Nutritional Value and Sensory Evaluation

2021 ◽  
pp. 4951-4956
Author(s):  
H.M. Moyeenudin ◽  
Thiruchelvi R.
Keyword(s):  
Sensory Evaluation ◽  
Antibacterial Properties ◽  
Good Health ◽  
Daily Basis ◽  
Piper Longum ◽  
Upper Respiratory Infection ◽  
Contagious Diseases ◽  
Medicinal Value ◽  
Upper Respiratory ◽  
Plectranthus Amboinicus

Focaccia is an Italian bread baked with herbs in a similar way to pizza, this can be utilized as a regular meal in daily basis, thus the bread prepared without cheese, it is considered as a good health supplement. The addition of herbs like Plectranthus amboinicus (Indian Borage) and Piper longum (long Pepper) to focaccia may increase the medicinal value. Borage is used as a medicine in treating contagious diseases like viral flu and cough through antiviral, antibacterial and antifebrile activity, likewise Piper longum acts as an antibacterial and have immunomodulation properties, piper longum is commonly known as Indian long pepper mostly used in siddha medicine to treat cough and respiratory disease. The upper respiratory infection mainly influence cough, sinusitis, sore throat, pharyngitis, also develop lung inflammation and this herb could be consumed in regular diet. The objective of this research is to analyze antiviral and antibacterial properties of Plectranthus amboinicus and Piper longum. Furthermore, to evaluate the Focaccia bread in addition with these herbs in preparation by sensory evaluation.

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